In June at Ferny Grove overnight and daytime temperatures were close to average. Daytime temperatures were the lowest in 5 years. In the Brisbane area many of the official sites observed close to average overnight temperatures and near average daytime temperatures at all of the official sites. Rainfall was below average and the lowest in 7 years but was close to the long term median. In the Brisbane area all of the official sites observed below average rainfall totals. At Ferny Grove air pressure was below average, mean relative humidity and mean minimum relative humidity was near average, mean maximum relative humidity was above average, mean dew point and mean maximum dew point was near average, mean minimum dew point was above average, wind speed was above average and there were 1 thunderstorm (1 thunder days).
Monthly Mean Daily Minimum Temperature: 10 ºC, 0.5 ºC below average and 1 ºC lower than same month in 2020. This is the equal third lowest on record for June and the lowest since 8.6 ºC in 2018. Many of the official sites in the Brisbane area observed below average mean minimum temperatures and was near average at the remaining sites. The sites that observed near average mean minimum temperatures were between 0.5 ºC below average at Archerfield with a mean minimum temperature of 8.9 ºC and 0.2 ºC above average at Cape Moreton Lighthouse (14.4 ºC). The highest mean minimum temperature of all the official sites was observed by Cape Moreton Lighthouse. Of the sites that observed below average mean minimum temperatures, two of the sites observed temperatures were 1 ºC below average being 1 ºC below average at Amberley (6.1 ºC and the lowest mean minimum temperature of all the official sites) and 1.2 ºC below average at Beaudesert (6.6 ºC). The mean minimum temperature observed at Brisbane was 11.3 ºC (0.6 ºC below average).
Monthly Mean Daily Maximum Temperature: 21.7 ºC, 0.2 ºC above average and 0.9 ºC lower than same month in 2020. This is the sixth highest on record for June and the lowest since 20.6 ºC in 2016. Mean maximum temperatures observed by the official sites in the Brisbane area were close to average at all of the sites. Mean maximum temperatures ranged between 0.3 ºC below average at both Beerburrum with a mean maximum temperature of 21.4 ºC and Brisbane (21.7 ºC) and 0.1 ºC above average at Archerfield (21.6 ºC) and Cape Moreton Lighthouse (19.8 ºC). The lowest mean maximum temperature was 19.8 ºC at Cape Moreton Lighthouse (0.1 ºC above average) and the highest mean maximum temperature was 21.7 ºC at Brisbane (0.3 ºC below average).
Mean Monthly Temperature: 15.8 ºC, 0.1 ºC below average, 1 ºC lower than the same month in 2020. This is the fifth lowest on record for June and the lowest since 15.7 ºC in 2018.
Lowest Temperature: 4.2 ºC on 11 June 2021 at 3:06 AM. Same month in 2020 was 5.9 ºC. This is the equal sixth lowest daily and monthly minimum temperature for June on record and the lowest since 3 ºC in 2016 on 26 June at 5:08 AM. Official stations in the Brisbane area observed the lowest temperature of the month at many sites on the 10th and at some sites on the 11th, 12th and 13th and 14th. The lowest was -0.6 ºC at Beaudesert on the 10th and the highest was 9.9 ºC at Cape Moreton Lighthouse on the 10th. In the Brisbane area nights were below average during much of the month. This resulted from cool south to south-west air flow associated with a low pressure system over New South Wales and Victoria.
Highest Temperature: 24.1 ºC on 17 June 2021 at 12:37 PM. The same month in 2020 was 25.8 ºC. This is the fourth lowest monthly maximum temperature for June, the lowest since 23.9 ºC in 2015 on 10 June at 1:10 PM, the sixteenth highest daily maximum temperature for June and the highest since 24.6 ºC on 15 June 2020 at 2:27 PM. The official sites measured the highest temperature for the month at most sites on the 16th and 17th and at some sites on the 1st, 2nd, 14th, 23rd and 24th. The lowest was 22.5 ºC at Cape Moreton Lighthouse on the 2nd and the highest was 25.5 ºC at Point Lookout on the 2nd. The highest temperature observed at Brisbane was 25.1 ºC on the 16th. In the Brisbane warm days occurred on some days early and late in the month and between the 14th and 17th.
Lowest Daily Maximum Temperature: 17.3 ºC on 26 June 2021 at 12:57 PM. This is the equal fourth highest daily lowest maximum temperature for June on record, the highest since 18.5 ºC in 2015 on 29 June at 3:20 PM, the twelfth lowest daily maximum temperature and the equal lowest since 17.3 ºC on 28 June 2020 at 3:23 PM. Same month in 2020 was 17.3 ºC. The official sites measured the coolest day of the month on the 9th at many sites and on the 3rd, 10th and 26th at some sites. These ranged between 16.2 ºC at Cape Moreton Lighthouse on the 9th and 18.2 ºC at Logan City Treatment Plant on the 9th. Brisbane observed 17.5 ºC on the 26th. In the Brisbane area cool days were observed on the 9th to 11th, 19th and 25th and 26th with some sites observing cool days during some days during the month.
Highest Daily Minimum Temperature: 16.3 ºC on 25 June 2021 at 7:04 AM. This is the fourth highest daily highest minimum temperature on record for June, the lowest since 14.7 ºC in 2019 on 2 June at 6:53 AM, the sixth highest daily minimum temperature for June and the highest since 18.3 ºC in 2020 on 14 June at 12:10 AM. Same month in 2020 was 18.3 ºC. In the Brisbane area the warmest nights occurred on the 25th at most sites and on the 26th at some sites. These ranged between 14.1 ºC at Gatton on the 25th and 17.9 ºC at Cape Moreton on the 25th. Brisbane observed 16.5 ºC on the 25th. Warm nights occurred during some days early in the month and in the middle of the month before warm nights on the 24th to 26th and on the 30th.
Monthly Mean Minimum Grass Temperature: 7.3 ºC (2.1 ºC lower than same month in 2020).
Lowest Daily Minimum Grass Temperature: 2.4 ºC on 11 June 2021 (2.9 ºC lower than same month in 2020). This coincided with the lowest minimum air temperature of 4.2 ºC for the month.
Highest Daily Minimum Daily Grass Temperature: 14.7 ºC on 25 June 2021 (2.2 ºC lower than same month in 2020). This coincided with the highest minimum air temperature of 16.3 ºC for the month.
Highest Minimum Grass Temperature Depression: 3.8 ºC on 23 June 2021 with a minimum grass temperature of 8.5 ºC and an air temperature of 12.3 ºC.
Lowest Minimum Grass Temperature Depression: 0.4 ºC on 6 June 2021 with a minimum grass temperature of 5.4 ºC and an air temperature of 5.8 ºC.
Minimum temperatures during June were predominately below average with some periods of above average temperatures throughout the month. The 1st was 2 ºC below average, easing to 1 ºC above average on the 2nd and warming to 3 ºC above average on the 3rd and 4th. The 5th was 1 ºC below average, before cooler nights that was 5 ºC below average on the 6th, 3 ºC below average on the 7th and 2 ºC below average on the 8th. The 9th was 3 ºC above average, before cooler nights followed being 5 ºC below average on the 10th, 6 ºC below average on the 11th, 5 ºC below average on the 12th, 3 ºC below average on the 13th and 4 ºC below average on the 14th. Near average temperature occurred on the 15th before cooling to 2 ºC below average on the 16th. It then warmed to 4 ºC above average on the 17th and 3 ºC above average on the 18th. The 19th was 1 ºC above average before cooling to 1 ºC below average on the 20th and 2 ºC below average on the 21st and 22nd. Warm nights occurred between the 23rd and 26th being 2 ºC above average on the 23rd, 4 ºC above average on the 24th, 6 ºC above average on the 25th and 4 ºC above average on the 26th. The 27th was 2 ºC below average, 3 ºC below average on the 28th, 1 ºC below average on the 29th and warmed to 2 ºC above average on the 30th.
Maximum temperatures in June were near average or slightly above average during most days with some cool days. The 1st and 2nd were 2 ºC above average, easing to near average on the 3rd and warmed to 1 ºC above average on the 4th to 7th. The 8th was near average before cool days between the 9th and 11th that was 3 ºC below average on the 9th and 10th and 2 ºC below average on the 11th. The 12th to 14th was 1 ºC above average, eased to near average on the 15th and to 3 ºC above average on the 16th and 17th. The temperature eased to near average on the 18th before cooling to 2 ºC below average on the 19th and warmed to 2 ºC above average on the 20th and was 1 ºC above average on the 21st. Near average temperature on the 22nd, warmed to 1 ºC above average on the 23rd and 2 ºC above average on the 24th. Cooler days followed being 3 ºC below average on the 25th, 4 ºC below average on the 26th, near average temperatures between the 27th and 29th and 1 ºC below average on the 30th.
The mean year to date temperature of 21.4 ºC was 0.2 ºC below average and the lowest for January to June since 21.1 ºC in 2013.
Heatwave Conditions (Maximum temperatures): Nil
Monthly Mean Daily Minimum MSL Pressure: 1016.3 hPa (3.5 hPa lower than same month in 2020). This is the sixth highest for June and the lowest since 1015 hPa in 2016.
Monthly Mean Daily Maximum MSL Pressure: 1021.1 hPa (2.9 hPa lower than same month in 2020). This is the sixth lowest on record for June and the equal lowest since 1021.1 hPa in 2016.
Monthly Mean MSL Pressure: 1018.7 hPa (1 hPa below average, 0.8 hPa lower than same month in 2020). This is the sixth lowest on record for June and the lowest since 1018 hPa in 2016.
Lowest MSL Pressure: 1007.2 hPa on 9 June 2021 at 5:03 AM. The same month in 2020 saw 1011.8 hPa. This is the equal fifth lowest monthly minimum air pressure for June, the lowest daily minimum air pressure on record since 998.7 hPa in 2016 on 5 June at 1:30 PM, the equal tenth lowest daily minimum air pressure for June and the lowest since 1004.7 hPa in 2016 on 20 June at 1:13 AM.
Highest MSL Pressure: 1028.8 hPa on 22 June 2020 at 10:06 PM. The same month in 2020 saw 1031.3 hPa. This is the fifth lowest June monthly maximum air pressure on record, the lowest since 1028.5 hPa in 2014 on 18 June at 9:25 AM, the equal twenty-sixth highest daily June maximum air pressure and the highest since 1030.2 hPa on 19 June 2020 at 8:55 AM.
Note: Air pressure measurements are being closely monitored to maintain its accuracy. Over the month of June, a difference of 0.78 hPa lower compared to the official BoM Brisbane site – No. 040913 was observed which is deemed as not meeting the expected accuracy.
Monthly Mean Daily Minimum Humidity: 53.2 % (1.3 % higher than same month in 2020 and 2.4 % below average). This is the fifth lowest on record for June and the highest since 56.8 % in 2017.
Monthly Mean Daily Maximum Humidity: 93.2 % (0.5 % lower than same month in 2020 and 3.2 % above average). This is the third highest on record for June and the lowest since 90.5 % in 2019.
Monthly Mean Humidity: 73.2 % (0.4 % higher than same month in 2020 and 0.4 % above average). This is the sixth highest on record for June and the highest since 73.3 % in 2017.
Lowest Humidity: 30 % on 10 June 2021 at 2:49 PM (4 % higher than this month in 2020). This is the fourth lowest monthly minimum humidity for June on record, the highest since 31 % in 2018 on 17 June at 2:29 PM, the equal fifth daily minimum humidity for June and the lowest since 26 % in 2020 on 2 June at 2:12 PM.
Highest Humidity: 98 % on 26 June 2021 at 2:47 AM (equal to same month in 2020). This is the equal third highest monthly June maximum humidity on record and the equal lowest since 98% in 2019 on 30 June at 7:31 AM.
Monthly mean daily minimum dew point: 7.4 ºC (1.1 ºC below average). This is the third lowest monthly mean minimum dew point for June on record and the lowest since 7.3 ºC in 2019.
Monthly mean daily maximum dew point: 13.7 ºC (0.2 ºC above average). This is the sixth lowest mean maximum dew point for June and the lowest since 13.2 ºC in 2018.
Monthly mean dew point: 10.5 ºC (0.5 ºC below average). This is the third lowest monthly mean dew point for June and the lowest since 10.2 ºC in 2018.
Lowest dew point: 0.6 ºC on 10 June 2021 at 2:52 PM. This is the fourth lowest monthly minimum dew point for June on record, the highest since 0.2 ºC in 2018 on 18 June at 12:20 AM, the sixth lowest daily dew point for June and the lowest since -0.2 ºC on 2 June 2020 at 2:38 PM.
Highest dew point: 17.8 ºC on 25 June 2021 at 1:52 PM. This is the fourth highest monthly maximum dew point on record for June, the lowest since 17.7 ºC in 2018 on 8 June at 11:50 AM, the seventeenth highest daily dew point for June and the highest since 21 ºC on 14 June 2020 at 12:45 PM.
Maximum Wind Gust: 46 km/hr on 19 June 2021 at 2:42 AM. This is the fourth lowest maximum wind gust on record for June on record, the highest since 62.2 km/hr in 2018 on 6 June at 3:44 PM, the equal twenty-second highest daily wind gust for June, and the highest since 50.5 km/hr on 22 June at 9:22 AM.
Maximum Wind Speed: 28 km/hr on 19 June 2021 at 6:32 AM (Moderate Force Wind). This is the sixth highest monthly maximum wind speed for June on record, the highest since 43.7 km/hr in 2018 on 17 June at 3:34 PM, the eighteenth highest daily wind speed for June and the equal highest since 28.5 km/hr on 19 June 2018 at 11:10 AM.
Wind Run: 2142.1 km (21.6 km higher than same month in 2020), 137.5 km below average and 6 % below average. This is the third highest on record for June total wind run and the highest since 2153 km in 2019.
Monthly Mean Wind Speed: 1.5 km/hr (1.5 km/hr lower than this month in 2020), 0.5 km/hr below the long term average). This is the third lowest on record for June and the lowest since the current record low of 1.1 km/hr in 2013.
Daily Mean Maximum Wind Gust: 23.1 km/hr (1.1 km/hr higher than this month in 2020), 3 km/hr above average and 14.9 % above average. This is the sixth highest daily mean maximum wind gust on record for June and the highest since 29.8 km/hr in 2018.
Daily Mean Maximum Wind Speed: 12.8 km/hr, 2.3 km/hr higher than this month in 2020), 4.8 km/hr above average and 59.7% above average. This is the sixth highest on record for June and highest since 15.9 km/hr in 2018.
Dominant Direction: W (S this month last year).
Monthly Rainfall Total: 23.9 mm (38 mm below average) and 38.6% of the long-term average. This total is in decile 4/ 32nd percentile which ranks as average and 12 mm below the long-term median (61.8 % of long term median). This total is lower than this month in 2020 which was 45.5 mm, the eleventh lowest on record for June and the lowest since 22.5 mm in 2014.
The long period rainfall totals continued to remain above average for rainfall periods up to 18 month but generally remained near average at the longer time spans, though 36 month remained below average. As compared with May 2021 the 6 monthly rainfall dropped back by 57.7 mm to 96.4 mm above average (decile 8), 9 month rainfall dropped back by 15.1 mm to 94.9 mm (decile 8) and 12 monthly slipped by 20.5 mm to 75.6 mm above average (decile 6). 18 month rainfall remained above average at 212.1 mm above average after improving by 46.4 mm (decile 8). 24 month rainfall slipped slightly by 18 mm from 9.8 mm above average to 8.1 mm below average (decile 5). 36 month rainfall continued to remain the only period that was significantly below average that was 129.8 mm below average but improved by 35.2 mm from May 2021. 48 monthly rainfall slipped slightly from 2.2 mm above average to 23.4 mm above average (decile 6).
The largest positive anomaly was observed by the 18 month rainfall that is the highest since 199.8 mm above average in the 18 months to June 2016. The lowest anomaly that was observed by the 36-month rainfall was the lowest for June since 263.3 mm in the 36 months to June 2016. Compared with the same period in 2020 the long period rainfall totals improved or dropped slightly. The greatest increase in the long period rainfall anomalies was the 18 month rainfall that increased by 523.3 mm.
In the Brisbane area all of the official sites observed below average rainfall totals. Some sites however ranked historically as near average as observed by Amberley with a total of 16.8 mm (36% of the long term average and observed the lowest rainfall total of all the official sites), Beerburrum with a total of 38.2 mm (50% of the long term average), Brisbane Aero with a total of 29.2 mm (44% of the long term average) and Gatton with a total of 26.2 % (44 % of the long term average). The remaining sites observed rainfall totals that ranked historically as low that ranged between 26 % of the long term average at Archerfield (17.2 mm) and 48 % of the long term average at Cape Moreton Lighthouse (64.8 mm). The highest total of all the official sites was 90.1 mm at Logan City Treatment Plant and the highest total of the main official sites was 64.8 mm at Cape Moreton Lighthouse.
In the Brisbane area light falls occurred on the 4th due to a surface trough and onshore flow. Showers with totals of up to 10 mm occurred on the 9th resulting from the passage of a cold front and trough. On the morning of the 15th were a line of thunderstorms that tracked across the Brisbane area with moderate totals of up to around 20 mm observed at some locations. The 23rd to 26th saw several days of light falls from moist onshore flow followed by the passage of a cold front and surface trough.
Number of Rain Days (0.1 mm or greater): 8 days, 4 days less than same month in 2020 and 1.4 days above average. This is sixth highest on record for June and is lowest since 6 days in 2018.
Highest Daily Total: 7.6 mm on 16 June 2021. This is the eighth highest daily total on record for June on monthly basis, the lowest since 4.9 mm in 2015 on 23 June, the equal fifty-first highest daily total on record for June on daily basis and the highest since 16.4 mm on 15 June 2020. The highest daily total in the Brisbane area of all official sites was 62 mm at Logan City Treatment Plant on the 16th.
The year to date total rainfall was 772.8 mm (83.1 mm above average and 12 % above average) and compared with previous annual totals for the same period is the lowest since 430.1 mm in 2019 and the thirteenth highest on record. This remained similar to the same period in 2020, which saw well above average rainfall in January and February becoming below average in April and May and near average in June. 2021 saw near average rainfall until above average rainfall in March to May 2021.
The year to date number of rain days of 74 was 15 days above the long term average. This is the tenth highest on record as compared with previous January to June totals and the lowest since 61 days in 2017.
Monthly Rainfall Total – (automatic gauge) 24 hours to 9am: 19.8 mm (4.1 mm less than the site official standard gauge and within 17.2%). Highest daily total of automatic gauge, (24 hours to 9am): 6.8 mm on 16 June 2021, (24 hours from midnight): 6.6 mm on 15 June 2021.
Note: This automatic gauge for the month of June, meet the expected accuracy (of +/- 10% of the standard gauge) at -17.2%.
Light rain from the late morning of the 3rd to the mid-afternoon before light rain at times during the evening. 6.7 mm was measured on the 4th. Light showers in the early morning of the 9th with 1.5 mm measured. A mild mid-morning thunderstorm with brief moderate falls, followed by light rain later in the morning of the 15th. This brought 7.6 mm on the 16th. Light showers in the early hours of the 23rd with 0.3 mm of rainfall. On the 24rd were light showers in the early hours with 0.5 mm measured on the 24th. Occasional light rain in the evening, followed by light rain at times in the early hours and early morning on the 25th brought 2 mm on the 25th. Light rain at times returned between later in the morning to the mid-evening, followed by light rain at times in the mid-to late early hours on the 26th. 3.7 mm was measured on the 26th. A light shower in the early afternoon, in the early evening and light showers late in the evening of the 29th. 1.1 mm was measured on the 30th before light showers in the mid-morning, a light to moderate shower in the early afternoon, a light shower in the mid-afternoon and light showers in the evening. Along with light showers early in the next morning, 4 mm was measured on the following day.
After some rainfall at the start of the month, about one-third of the rainfall was measured on the 16th, and another third later in the month. Most rainfall during the month was light.
There was 0 days with falls of at least 25 mm (equal to same month in 2020) with 2 days of less than 1 mm (equal to same month in 2020).
Highest rainfall rate was 43.6 mm/hr on the 30 June 2021 at 12:08 PM. This is the fifth highest monthly rain rate for June on record, the lowest since 25.2 mm/hr in 2018 on 28 June at 4:41 AM, the eighth highest daily maximum rain rate for June and the highest since 155.6 mm/hr on 14 June 2020 at 12:59 PM.
The highest hourly rainfall total was 6 mm on the 15 June 2021 at 10:18 AM. This is the fourth lowest hourly rain for June on daily and monthly basis, the lowest since 4.2 mm in 2018 on 7 June at 1:50 PM, the ninth highest daily hourly rainfall total and the highest since 11.6 mm on 14 June 2020 at 1:19 PM.
Number of severe thunderstorms: 0
Number of thunderstorms: 1 (Mild: 1, Moderate: 0)
Number of thunder days: 1 day
Number of nearby storms: 0
Severe thunderstorms of note in the Brisbane area: Nil
NOTE: This is a summary of the aforementioned monthly records exceeded over a monthly basis. Additionally, it lists records that are the lowest or highest in at least 5 years. See end notes for more information about record periods.
Record low June mean daily maximum temperature in at least 5 years |
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Observed [C] |
Most recent lower |
Years of record |
Monthly average |
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21.7 |
20.6 in 2016 |
10 |
21.5 |
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Record low June minimum temperature in at least 5 years |
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Observed [C] |
Most recent lower |
Years of record |
Monthly average |
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4.2 on 11th at 3:06 AM |
3 in 2016 on 26th at 5:08 AM |
10 |
10.5 |
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Record low June maximum temperature in at least 5 years |
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Observed [C] |
Most recent lower |
Years of record |
Monthly average |
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24.1 on 17th at 12:37 PM |
23.9 in 2015 on 10th at 1:10 PM |
10 |
21.5 |
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Record high June lowest daily maximum temperature in at least 5 years |
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Observed [hPa] |
Most recent higher |
Years of record |
Monthly average |
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17.3 on 26th at 12:57 PM |
18.5 in 2015 on 29th at 3:20 PM |
10 |
21.5 |
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Record low June mean daily minimum MSL pressure in at least 5 years |
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Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
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1016.3 |
1015 hPa in 2016 |
11 |
1017.3 |
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Record low June mean daily maximum MSL pressure in at least 5 years |
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Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
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1021.1 |
1021.1 in 2016 |
11 |
1021.9 |
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Record low June mean MSL pressure in at least 5 years |
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Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
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1018.7 |
1018 in 2016 |
11 |
1017.7 |
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Record low June minimum MSL pressure in at least 5 years |
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Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
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1007.2 on 9th at 5:03 AM |
998.7 in 2016 on 5th at 1:30 PM |
11 |
1017.3 |
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Record low June maximum MSL pressure in at least 5 years |
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Observed [hPa] |
Most recent lower |
Years of record |
Monthly average |
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1028.8 on 22nd at 5:03 AM |
1028.5 in 2014 on 18th at 9:25 AM |
11 |
1021.9 |
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Record low June mean wind speed in at least 5 years |
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Observed [km/hr] |
Most recent lower |
Years of record |
Monthly average |
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1.5 |
1.1 in 2013 |
9 |
2 |
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Record low June rainfall total in at least 5 years |
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Observed [mm] |
Most recent lower |
Years of record |
Monthly average |
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23.9 |
22.5 in 2014 |
33 |
61.9 |
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Record low June highest daily rainfall total in at least 5 years |
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Observed [mm] |
Most recent lower |
Years of record |
Monthly average |
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7.6 on 16th |
4.9 mm in 2015 |
33 |
22.8 |
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NOTE: These records are drawn from automatic data record for this site. See end notes for more information.
All time records |
No records |
Monthly records |
No records |
Summary of Averages and Extremes for June 2021 for Ferny Grove, Brisbane, Queensland, Australia |
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Min Temp |
Max Temp |
Mean Temp |
Temp Range |
Min Grass Temp |
Min Grass Temp Depression |
Min Relative Humidity |
Max Relative Humidity |
Mean Relative Humidity |
Min MSL pressure |
Max MSL Pressure |
Mean MSL Pressure |
Dew Point |
Max Wind Gust |
Max Wind Speed |
Daily rain |
Average |
10.0 |
21.7 |
15.8 |
11.7 |
7.3 |
2.7 |
53.2 |
93.2 |
73.2 |
1016.3 |
1021.1 |
1018.7 |
10.5 |
23.1 |
12.8 |
0.8 |
Min |
4.2 |
17.3 |
12.0 |
2.6 |
0.1 |
0.4 |
30 |
62 |
51 |
1007.2 |
1012.5 |
1009.9 |
0.6 |
12.0 |
5.0 |
|
Max |
16.3 |
24.1 |
19.2 |
16.6 |
14.7 |
13.7 |
86 |
98 |
92 |
1025.5 |
1028.8 |
1026.9 |
17.8 |
46.0 |
28.0 |
7.6 |
Total |
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23.9 |
Summary for June 2021 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
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Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
-0.1 |
+0.4 |
-1.0 |
-0.5 |
+2.8 |
+4.7 |
-38.0 |
38.6 |
Min |
-0.5 |
-2.4 |
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-1.1 |
|
|
|
|
Max |
+0.2 |
+3.2 |
|
+0.2 |
|
|
+1.1 |
|
Monthly averages and extremes for Year of 2021 to Date for Ferny Grove, Brisbane, Queensland, Australia |
|||||||||||
|
Temperature |
Temperature Anomaly from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
||||||
|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
|
|
|
Jan-21 |
20.0 |
29.9 |
16.6 |
36.6 |
24.9 |
-0.6 |
-0.8 |
-0.7 |
95.8 |
-49.2 |
19 |
Feb-21 |
20.3 |
30.4 |
17.3 |
36.1 |
25.3 |
-0.0 |
+0.4 |
+0.2 |
126.2 |
-35.6 |
14 |
Mar-21 |
19.4 |
28.7 |
14.8 |
34.6 |
24.0 |
+0.2 |
-0.0 |
+0.1 |
297.3 |
+173.1 |
17 |
Apr-21 |
14.7 |
26.5 |
9.1 |
33.7 |
20.6 |
-1.3 |
+0.0 |
-0.7 |
130.1 |
+36.3 |
9 |
May-21 |
12.1 |
24.2 |
6.1 |
29.3 |
18.2 |
-0.2 |
+0.0 |
-0.1 |
99.5 |
-3.5 |
7 |
Jun-21 |
10.0 |
21.7 |
4.2 |
24.1 |
15.8 |
-0.5 |
+0.2 |
-0.1 |
23.9 |
-38.0 |
8 |
YTD |
16.0 |
26.9 |
4.2 |
36.6 |
21.4 |
-0.4 |
-0.0 |
-0.2 |
772.8 |
+83.1 |
74 |
Min Temperature and time of occurrence for June 2021 |
|||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
8.2 |
11.0 |
13.5 |
12.9 |
9.7 |
5.8 |
7.3 |
8.2 |
13.7 |
5.2 |
4.2 |
5.9 |
7.4 |
6.2 |
10.3 |
8.2 |
4:40 A |
6:31 A |
6:48 A |
2:54 A |
6:58 A |
6:19 A |
4:39 A |
6:31 A |
6:51 A |
7:05 A |
3:06 A |
6:20 A |
4:25 A |
6:21 A |
6:20 A |
6:48 A |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
14.2 |
13.8 |
11.4 |
9.4 |
8.8 |
8.4 |
12.3 |
14.2 |
16.3 |
14.6 |
8.2 |
7.4 |
9.8 |
12.8 |
|
|
5:21 A |
12:46 A |
6:52 A |
6:40 A |
3:26 A |
5:49 A |
7:03 A |
9:21 P |
7:04 A |
6:23 A |
6:58 A |
6:44 A |
4:12 A |
5:41 A |
|
|
Max Temperature and time of occurrence for June 2021 |
|||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
23.1 |
23.1 |
21.8 |
22.2 |
22.4 |
22.3 |
22.2 |
21.7 |
18.2 |
18.8 |
19.7 |
22.3 |
22.7 |
22.8 |
21.6 |
24.1 |
12:56 P |
11:42 A |
9:59 A |
2:07 P |
2:18 P |
2:09 P |
2:19 P |
1:18 P |
1:09 P |
2:29 P |
1:50 P |
1:37 P |
1:39 P |
2:36 P |
3:05 P |
2:16 P |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
24.1 |
21.3 |
19.7 |
23.2 |
22.6 |
21.1 |
22.4 |
23.5 |
18.9 |
17.3 |
21.9 |
22.0 |
21.6 |
20.9 |
|
|
12:37 P |
1:02 P |
2:17 P |
2:54 P |
2:03 P |
2:44 P |
12:45 P |
1:00 P |
1:43 P |
12:57 P |
2:32 P |
1:04 P |
12:42 P |
11:59 A |
|
|
Daily Rainfall for June 2021 |
|||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
0.0 |
0.1 Dew |
0.0 |
6.7 |
0.0 |
0.0 |
0.1 Dew |
0.1 Dew |
1.5 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
7.6 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.1 Dew |
0.3 |
0.5 |
2.0 |
3.7 |
0.0 |
0.1 Dew |
0.0 |
1.1 |
|
|
Temperature values coloured according to its difference from the long-term average for this month. Outlined value mark highest and lowest values.
Maximum temperatures are measured over the 24 hours from 9 am on the day of measurement. Minimum temperatures are measured over the 24 hours to 9 am of the day of measurement. This was previously different to the official time standards and measured in degrees ºC (before 2018).

Rainfall is measured over 24 hours to 9am and recorded on that day. This is the same as the official time standard and measured in millimetres. Some measurements are not made at 9am and is adjusted based on the automatic record. For other variables see Notes below.
Notes
Based on Bureau of Meteorology Climate summaries (Copyright) of which some data was obtained from. From September 2017 the Bureau of Meteorology Climate summaries were expanded to provide data from official stations in and near the Greater Brisbane “Greater capital city Statistical Area” (GCCSA).
Data Copyright Ferny Grove Weather 2021, Produced 2/10/21. Data Checking has been carried out, but errors may still be present and therefore there is no assurance of correctness. Corrections may be made at a later data if errors or deficiencies are found and/or improvements in data handling techniques are made, though data with major improvements may not be updated in this summary. Data measured with professional moderate accuracy equipment. This replaced non professional equipment of low accuracy with differences in the measured data. The new equipment measures the daily average wind speed and wind run about 40 % higher. Daily rainfall and grass minimum temperature is measured using non-professional equipment of moderate accuracy.
Site Commencement data is April 15 2009 except for daily rainfall which commenced on January 1 1987. Not all variables have been measured over the entire station record. Most variables are measured over a 24 hour period ending in the evening and over a 24 hour period from midnight effective October 5 2018. Maximum temperatures are measured over the 24 hours from 9 am on the day of measurement. Minimum temperatures are measured over the 24 hours to 9 am of the day of measurement. Rainfall is measured over 24 hours to 9am and recorded on that day. This is the same as the official time standard. Some rainfall measurements are not made at 9am and is adjusted based on the automatic record. Minimum Grass Temperature is measured over an approx. 12 hour period ending in the early morning. MSL refers to Mean Sea Level, which is the standard meteorological method of measuring air pressure reduced to sea level based on both elevation and temperature. Grass Minimum Depression is the difference of the grass minimum temperature from the air temperatures and is a positive value when the grass temperature is below the air temperature.
Up until March 9 2019 automatic records as Dew Point, Average Wind Speed, Dominant Wind Direction, Wind Run, Rain Rate and Hourly Rain are measured over a 24 hour period starting at midnight and recorded for that day. This started on the 6 October 2011. The automatic record is used for some data and also may be used if data is not available/ not suitable. From March 9 2019 the automatic record became the official record instead, simplifying this process. Until replaced on 5 October 2018 the temperature and humidity sensor is under exposed so minimum temperature and maximum humidity are incorrect and low accuracy rain gauge is used which are not used as the site’s official record. This data limitation does not apply to other measurements of temperatures, air pressure and humidity, wind gust, daily and monthly rainfall and rain days elsewhere in this summary which are recorded separately and form the official record for this site. The replacement equipment is sited in more exposed locations and therefore the limitations don’t apply, though the automatic daily rainfall doesn’t form the official data for the site.
Long term averages are based on all available long period past measurements from October 2019 whilst for non automatic rainfall is based on 1987 to 2017 average from the station record. Prior to this the long term average for Temperature, Relative Humidity and Air pressure is based on 2009 to 2015 average from the station record and wind speed is based on the 2010 to 2018 average from station record. Wind Run is 2011 to 2018 and Rain Rate and High Hourly Rain is 2011 to 2017.
The Fraction of monthly average expresses how much has fallen in respect to the long term average listed as a percentage. The decile ranking compares the rainfall total to the historical record for the site where the record is divided into 10 equal groups. Decile 1 is the lowest 10% of the record (10th percentile) and Decile 10 (90th percentile) is the highest 10% of the record. Decile 1 is considered “very low”, decile 2 and 3 “low”, decile 4 to 7 “average”, decile 8 and 9 “high” and decile 10 “very high”.