Overnight and daytime temperatures were close to average. Spring rainfall was well above average and nearly five times the long term average. Mean relative humidity was below average, mean air pressure was near average, mean dew point was close to average and wind speed was close to average. There were 23 thunderstorms.
Seasonal mean minimum temperature: 21.1 ºC, 0.2 ºC below average and 0.4 ºC lower than same season in 2017.
Seasonal mean maximum temperature: 27.5 ºC, 0.4 ºC below average and equal to same season in 2017.
Seasonal mean temperature: 25.8 ºC, 0.7 ºC above average, 0.4 ºC higher than same season in 2017-18
Lowest temperature: 7.2 ºC at 6:40 AM on 2 September 2018. Same season in 2017 was 4.6 ºC.
Highest temperature: 37.2 ºC at 2:40 PM on 28 November 2018. This season in 2017 was 36.3 ºC.
Lowest maximum temperature: 18.6 ºC at 8:55 AM on 13 October 2018. For spring, this is the equal lowest on record on seasonal and daily basis, shared with 18.6 ºC in 2010 on 11 October at 3:42 PM. This season in 2017 was 18.9 ºC.
Highest minimum temperature: 22.6 ºC at 12:31 AM on 8 November 2018. this season in 2017 was 21.9 ºC
The monthly mean temperature for September was below average at 0.7 ºC below average with a mean temperature observed of 18.4 ºC. October was close to average being 0.1 ºC above average with a mean temperature of 21 ºC, and November was equal to the long term average with a mean temperature of 23.9 ºC. The mean minimum temperature for September was 0.6 ºC below average with a mean minimum of 11.3 ºC, while it warmed to 1.1 ºC above average for October with a recorded mean minimum temperature of 15.4 ºC. November was below average by 0.5 ºC with a mean minimum of 17.4 ºC. The September mean maximum temperature was 25.4 ºC and 0.8 ºC below average, while October was similar at 0.9 ºC below average with a mean maximum temperature of 26.6 ºC. November though was 0.6 ºC above average with an observed mean maximum temperature of 30.5 ºC. The mean minimum temperature for the season was 14.7 ºC (equal to the long term average), the mean maximum temperature was 27.5 ºC (0.4 ºC below average) with the seasonal mean being 0.2 ºC below average with a temperature of 21.1 ºC.
In September minimum temperatures were mostly below average over the first 20 days of the month and generally above average for the rest of the month. It cooled to 5 ºC below average on the 2nd, before easing to 3 ºC below average on the 3rd and to 2 ºC below average on the 4th and 5th. The 7th was 2 ºC below average before warming to 4 ºC above average on the 8th. The 9th was 2 ºC below average, the 10th and 11th was 3 ºC below average and the 12th and 13th was 2 ºC below average. The 18th was 2 ºC below average and also on the 21st and warming to 2 ºC above average on the 22nd. There were warm nights at the end of the month with the 25th being 2 ºC above average on the 25th. On the 28th it was 2 ºC above average, 1 ºC above average on the 29th and 5 ºC above average on the 30th and the warmest minimum for the month.
October minimum temperatures were above average for the most of the month except for some cool nights at the start of the month. The 1st was 5 ºC below average, the 2nd and 3rd was 4 ºC below average, before close to average temperature until the 10th. The 11th saw 3 ºC above average and 2 ºC above average on the 14th. The 15th was 3 ºC above average, warming to 5 ºC above average on the 16th, easing to 4 ºC above average on the 17th and 18th. The 19th was 3 ºC above average, the 20th 2 ºC above average and the 21st 4 ºC above average. It then temporarily eased to on average on the 22nd before warming to 3 ºC above average on the 23rd and 24th, 4 ºC above average on the 25th and 2 ºC above average on the 26th. The 27th was 4 ºC above average, 3 ºC above average on the 28th, 4 ºC above average on the 29th and then close to average on the 30th.
In November minimum temperatures were predominately below average with some above average minimum temperatures in the first week of the month and on some days at the end of the month. The 1st was 3 ºC below average and 3 ºC below average on the 3rd. It warmed to 2 ºC above average on the 5th, 4 ºC above average on the 6th and 7th (highest temperature for the month on the 7th) and to 5 ºC above average on the 8th. It then cooled to 3 ºC below average on the 9th, 5 ºC below average on the 10th (lowest temperature for the month) and 3 ºC below average between 11th and 14th. It was close to average until the 21st, except for 2 ºC below average on the 20th. The 20th was 2 ºC below average and the 22nd was 4 ºC below average. It cooled to 3 ºC below average on the 24th and 25th and the 26th was 2 ºC below average on the 26th. It warmed to 4 ºC above average on the 28th, 3 ºC above average on the 29th before returning to near average on the 30th.
Maximum temperatures in September were cooler than normal over many days, particularly the first half of the month. There were a few warm days, mostly over the second half of the month. It cooled to 6 ºC below average on the 3rd and 5 ºC below average on the 4th and 5th. The 6th was 3 ºC below average and close to average on the 7th to 14th. It warmed to 3 ºC above average on the 15th and 16th. The 17th and 18th was 2 ºC below average and rising to 5 ºC above average on the 20th. The 25th was 5 ºC below average, and 2 ºC above average on the 28th. The 29th was 5 ºC above average and the hottest day of the month while the 30th was the coolest day of the month being 6 ºC below average.
October maximum temperatures were predominately close to or below average especially in the first half of the month. There were warm days over much of the second half of the month. The 1st and 2nd was 2 ºC below average, the 3rd was 3 ºC below average, while the 6th was 6 ºC below average and 4 ºC below average on the 7th. The 10th was 3 ºC above average, then cooler on the 11th being 4 ºC below average, 8 ºC below average on the 12th and 9 ºC below average on the 13th and 14th. The 15th was 7 ºC below average, easing to 2 ºC below average on the 16th and 1 ºC below average on the 17th. It was 4 ºC below average on the 18th, then near average until the 21st. It warmed to 2 ºC above average on the 22nd and 23rd, 6 ºC above average on the 24th. The 26th was 7 ºC above average, 3 ºC above average on the 28th before cooling to 6 ºC below average on the 29th.
The maximum temperatures of November were generally above average, with a few close to average maximum temperatures. Most of the cool days over the month were during the middle of the month. It was 2 ºC below average on the 2nd, before warming to 2 ºC above average on the 3rd, and 4 ºC above average on the 4th and 5th. The 6th was 5 ºC above average, 4 ºC above average on the 7th, before cooling to 4 ºC below average on the 8th, 6 ºC below average on the 9th (lowest temperature for the month) and 3 ºC above average on the 10th and 11th. The 12th was 2 ºC below average, the 13th was 3 ºC below average, then returning close to average before cooling to 5 ºC below average on the 18th. The 19th was 3 ºC below average, 2 ºC below average on the 20th before warming to 4 ºC above average on the 21st. It was 2 ºC above average on the 24th, warming to 5 ºC above average on the 25th and 6 ºC above average on the 26th. The 27th was 2 ºC below average, while the 28th was 7 ºC above average (highest temperature for the month) and 5 ºC above average on the 29th
Monthly mean minimum grass temperature: 13.2 ºC, equal to same season in 2018.
Lowest minimum grass temperature: 6 ºC on 2 September 2018 (3ºC higher than same month in 2017). This was with an air temperature of 7.2 ºC.
Highest minimum grass temperature: 21 ºC on 22 November 2018 (0.7 ºC higher than same month in 2017). This was with a minimum air temperature of 21.9 ºC for the month.
Seasonal Mean Minimum Pressure: 1013.8 hPa (0.3 hPa lower than same season in 2017).
Seasonal Mean Maximum Pressure: 1019.3 hPa (equal to the same season in 2017).
Seasonal Mean Pressure: 1016.6 hPa (0.1 hPa above average) and 0.1 hPa lower than same season in 2017.
Lowest Seasonal MSL Pressure: 995.0 hPa on 28 November 2018 at 1:52 PM. This season in 2017 saw 1003.7 hPa. For spring this is the lowest seasonal and daily air pressure on record exceeding the old record low of 996 hPa on 16 October 2010 at 10:03 AM.
Seasonal Highest MSL Pressure: 1028.5 hPa on 22 September 2018 at 7:46 AM. The same season in 2017 was 1003.7 hPa.
Seasonal Mean Minimum Relative Humidity: 46.4% (3.8 % lower than same season in 2017 and 0.1% above average). This is the lowest since 43.2% in 2016 and the fifth highest on record.
Seasonal Mean Maximum Relative Humidity: 83.4% (5.6% lower than same season last year and 6.1% below average). This is the lowest on record with the old record being 86.6% in 2016.
Seasonal Mean Relative Humidity: 64.9 % (4.7 % lower than same month last year and 3.1 % below average). This is second lowest on record and the lowest since 60.7 % in 2009.
Lowest Seasonal Humidity: 10% on 24 November 2018 at 2:44 PM (10% lower than this month last year). This is the lowest seasonal and daily humidity for spring on record, exceeding the previous record of 14% on 4 September 2014 at 2:50 PM.
Seasonal Highest Humidity: 98%, occurred during September and October. This has previously occurred 34 times in spring. This is the third highest on record and the equal lowest seasonal maximum humidity on record equalling 98% in 2014 on 20 November at 5:50 AM.
Seasonal mean minimum dew point: 11.5 ºC (0.9 ºC below average)
Seasonal mean maximum dew point: 17.1 ºC (0.8 ºC above average)
Seasonal mean dew point: 14.3 ºC (0.2 ºC below average)
Lowest dew point: -4.1 ºC on 24 November 2018 at 2:44 PM. This is the lowest on record for November exceeding the previous record of 3.2 ºC on 6 November 2016 at 12:26 PM.
Highest dew point: 24.9 ºC on 6 November 2018 at 11:40 AM
Maximum Wind Gust: 68.7 km/hr on 19 September 2018 at 4:48 PM. For spring this is the equal second highest seasonal wind gust and shared with 68.7 km/hr on 9 November 2017 at 3:53 PM. The maximum wind gust this month last year was 66 km/hr and this season last year was 68.4 km/hr.
Maximum Wind Speed: 45.7 km/hr on 8 September 2018 at 7:38 AM (Strong force Wind).
Seasonal Wind Run: 6540.6 km. This is the highest on record exceeding the old record in 2016 of 5310.9 km. This season last year was 4741.0 km.
Seasonal Mean Wind Speed: 3.0 km/hr (0.9 km/hr higher than this season in 2017) and the highest on record, with the old record being 2.5 km/hr in 2014.
Daily Mean Maximum Wind Speed: 14.3 km/hr
Dominant Direction: SE (S this season in 2017).
Rainfall total: 323.2 mm, 41.8 mm above average (163.3 % of long term average). This ranks as decile 9 /90th percentile and as high. This is lower than this season in 2018 which was 339.7 mm. Automatic rain gauge was 297.8 mm (-7.8 % of manual gauge).
Highest daily rainfall total: 56.5 mm on 6 October 2018.
Number of rain days (0.1 mm or greater): 35 days, 2 less than season season last year and 13.8 above average.
Highest rainfall rate was 261.8 mm/hr on the 21 October 2019 at 2:31 PM.
Highest hourly rainfall was 30.4 mm on the 6 October 2018 at 12:55 AM.
There were 23 thunderstorms (2 were severe), with 16 days with thunder, along with 4 nearby thunderstorms.
Little rainfall was measured during the middle of the month. Showers occurred early in the month with a thunderstorm on the 8th. Rainfall later in the month was mostly from several thunderstorms and also some rain.
Hazy with dry air during the middle of the month after a dry wind change on the 16th.
There were several cloudy and cool days associated with the rainfall.
For September there was 1 existing records exceeded, along with 4 records that was highest/lowest in at least 5 years.
There were regular showers, thunderstorms and period of rain with heavy falls. Thunderstorms were very regular in the second week of the month. Heavy falls were less frequent later in the month with showers and drizzle mostly, but with thunderstorm activity persisting.
Numerous cloudy days associated with the high rainfall with several cold days.
For October there were 2 existing records exceeded, along with 6 records that was highest/lowest in at least 5 years.
During the month were some light showers or drizzle with low rainfall totals with very little rainfall in the first half of the month. On the 2st a mild thunderstorm brought heavy falls and brought half of the monthly total.
Light to moderate and gusty NW to S winds in the afternoon of the 28th during a hot day with low humidity
For November there were 6 existing records exceeded, along with 9 records that was highest/lowest in at least 5 years.
For the season there were 12 existing records exceeded, along with 18 records that were highest/lowest in at least 5 years.
For more detailed analysis refer to the “Seasonal Meteorological Report of spring 2018”.
Summary of Averages and Extremes for spring 2018 for Ferny Grove, Brisbane, Queensland, Australia |
|||||||||||||
|
Min Temperature |
Max Temperature |
Min Relative Humidity |
Max Relative Humidity |
Min pressure |
Max pressure |
Max Wind Gust |
Max Wind Speed |
Daily rain |
Daily Avg. Temp |
Daily Temp Range |
Min Grass Temp |
Min Grass Temp Depression |
September |
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
11.3 |
25.4 |
47.9 |
92.6 |
1016.7 |
1022.4 |
36.2 |
19.1 |
1.3 |
18.4 |
14.0 |
10.0 |
-1.4 |
Min |
7.2 |
19.7 |
25.0 |
77.0 |
1008.9 |
1013.8 |
15.6 |
4.3 |
|
14.8 |
2.6 |
6.0 |
-2.0 |
Max |
17.1 |
31.2 |
78.0 |
98.0 |
1022.9 |
1028.5 |
68.7 |
45.7 |
14.6 |
22.2 |
20.2 |
15.8 |
-0.4 |
Total |
|
|
|
|
|
|
|
|
37.9 |
|
|
|
|
October |
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
15.4 |
26.6 |
54.3 |
72.5 |
1014.8 |
1019.7 |
25.3 |
16.7 |
8.5 |
21.0 |
11.2 |
14.5 |
-0.9 |
Min |
9.1 |
18.6 |
27.0 |
58.0 |
1007.9 |
1014.7 |
13.2 |
6.0 |
|
16.6 |
3.7 |
8.9 |
-2.0 |
Max |
18.7 |
34.6 |
73.0 |
98.0 |
1023.3 |
1027.9 |
49.0 |
25.2 |
56.5 |
25.5 |
18.3 |
17.9 |
-0.2 |
Total |
|
|
|
|
|
|
|
|
263.7 |
|
|
|
|
November |
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
17.4 |
30.5 |
37.1 |
85.1 |
1010.0 |
1015.7 |
28.3 |
14.4 |
0.8 |
23.9 |
13.1 |
15.3 |
-2.2 |
Min |
12.6 |
24.4 |
10.0 |
44.0 |
995.0 |
1005.7 |
18.0 |
8.0 |
|
19.8 |
3.0 |
10.0 |
-3.2 |
Max |
22.6 |
37.2 |
58.0 |
97.0 |
1021.3 |
1026.2 |
54.0 |
32.0 |
11.5 |
29.5 |
20.2 |
21.0 |
-0.9 |
Total |
|
|
|
|
|
|
|
|
21.6 |
|
|
|
|
Season |
|
|
|
|
|
|
|
|
|
|
|
|
|
Average |
14.7 |
27.5 |
46.4 |
83.4 |
1013.8 |
1019.3 |
30.0 |
16.7 |
3.5 |
21.1 |
12.8 |
13.2 |
-1.5 |
Min |
7.2 |
18.6 |
10.0 |
44.0 |
995.0 |
1005.7 |
13.2 |
4.3 |
0.0 |
14.8 |
2.6 |
6.0 |
-3.2 |
Max |
22.6 |
37.2 |
78.0 |
98.0 |
1023.3 |
1028.5 |
68.7 |
45.7 |
56.5 |
29.5 |
20.2 |
21.0 |
-0.2 |
Total |
|
|
|
|
|
|
|
|
323.2 |
|
|
|
|
Summary for spring 2018 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
|||||||
|
Temperature |
Relative Humidity |
Air Pressure |
Daily Rainfall |
Rain total |
Rain total long term average |
Fraction of monthly average (%) |
September |
|
|
|
|
|
|
|
Average |
-0.7 |
+2.9 |
+2.0 |
+0.5 |
37.9 |
37.4 |
101.3 |
Min |
-0.6 |
+4.2 |
- |
|
|
- |
- |
Max |
-0.8 |
+1.8 |
- |
+20.3 |
|
- |
- |
October |
|
|
|
|
|
|
|
Average |
+0.1 |
-4.9 |
+0.6 |
+189.6 |
263.7 |
74.1 |
355.9 |
Min |
+1.1 |
+7.8 |
- |
|
- |
- |
- |
Max |
-0.9 |
-16.7 |
- |
+234.4 |
- |
- |
- |
November |
|
|
|
|
|
|
|
Average |
+0.0 |
-7.4 |
-2.2 |
-64.8 |
21.6 |
86.4 |
25.0 |
Min |
-0.5 |
-11.6 |
- |
|
- |
- |
- |
Max |
+0.6 |
-3.3 |
- |
-20.8 |
- |
- |
- |
Season |
|
|
|
|
|
|
|
Average |
-0.2 |
-3.1 |
0.1 |
41.8 |
323.2 |
197.9 |
163.3 |
Min |
0.0 |
0.1 |
- |
- |
- |
- |
- |
Max |
-0.4 |
-6.1 |
- |
78.0 |
- |
- |
- |
Monthly averages and extremes for spring 2018 to Date for Ferny Grove, Brisbane, Queensland, Australia |
|||||||||||
|
Temperature |
Temperature from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
||||||
|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
|
|
|
Sep-18 |
11.3 |
25.4 |
7.2 |
31.2 |
18.4 |
-0.6 |
-0.8 |
-0.7 |
37.9 |
0.5 |
9 |
Oct-18 |
15.4 |
26.6 |
9.1 |
34.6 |
21.0 |
+1.1 |
-0.9 |
+0.1 |
263.7 |
189.6 |
20 |
Nov-18 |
17.4 |
30.5 |
12.6 |
37.2 |
23.9 |
-0.5 |
+0.6 |
+0.0 |
21.6 |
-64.8 |
7 |
Season |
14.7 |
27.5 |
7.2 |
37.2 |
21.1 |
+0.0 |
-0.4 |
-0.2 |
323.2 |
+41.8 |
36 |
Data copyright Ferny Grove Weather 2019, Produced 26/11/19. 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. Data measured with low accuracy equipment, mostly replaced with professional moderate accuracy equipment from October 5 except for daily rainfall which is measured using non-professional equipment with 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 effective October 5 this is the 24 hours from midnight. 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 is same to the official time standards and measured in degrees C. 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 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.
Dew Point, Average Wind Speed, Dominant Wind Direction, Wind Run, Rain Rate and Hourly Rain are measured automatically over a 24 hour period starting at midnight and recorded for that day. This started on the 6 October 2011. Until replaced from 5 October 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. However the automatic record for some data may be used if data is not available/ not suitable.
Long term averages are based on all available long period past measurements. 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. Long term average for rainfall is based on 1987 to 2017 average from the station record.
The Fraction of monthly average expresses how much has fallen in respect to the long term average listed as a percentage.