In July overnight temperatures were above average and daytime temperatures were well above average and record high. Rainfall at Ferny Grove was below average but was near the long term median. Mean air pressure was above average, mean humidity was below average, mean dew point was below average, wind speed was near average and there were 0 thunderstorms (0 thunder days).
Monthly mean minimum temperature: 9.5 ºC, 0.8 ºC above average and 1.4 ºC higher than same month in 2018.
Monthly mean maximum temperature: 23.5 ºC, 2.4 ºC above average and 0.1 ºC higher than same month in 2018. This is the highest on record for July exceeding the previous record of 23.4 ºC in 2018.
Monthly mean temperature: 16.5 ºC, 1.6 ºC above average and 0.7 ºC higher than same month in 2018. This is the highest on record for July exceeding the previous record of 16.2 ºC in 2016.
Lowest temperature: 5.1 ºC on 16 July 2019 at 6:51 AM. Same month in 2018 was 1.8 ºC. This is the second highest monthly minimum temperature for July on record, the highest since the record high of 5.9 ºC in 2010 on 28 July at 7:37 AM.
Highest temperature: 27.2 ºC at 2:04 PM on 24 July 2019. Same month in 2018 was 25.1 ºC.
Lowest maximum temperature: 20.2 ºC at 2:21 PM on 15 July 2019. This is the second highest monthly lowest maximum temperature for July on record, the lowest since 17.3 ºC in 2017 on 7 July at 3:35 PM. This month in 2018 was 20.5 ºC.
Highest minimum temperature: 14.8 ºC on 5 July 2019 at 4:47 AM. This month in 2018 was 17.8 ºC.
Minimum temperatures during July were above average during many days with also many cool nights also during the month during the middle of the month. On the 1st to 3rd minimum temperatures were 3 ºC above average, before warming to 6 ºC above average on the 4th to 6th when the warmest night of the month was observed. The 7th was 5 ºC above average and the 8th was 4 ºC above average. It cooled to near average for 2 days with the 9th being 1 ºC above average and the 10th was near average. A cool period then followed between the 11th and 17th, with the 11th 2 ºC below average, the 12th and 13th was 1 ºC below average, the 14th was 2 ºC below average, 1 ºC below average on the 15th, 5 ºC below average on the 16th and 3 ºC below average on the 17th. It then warmed to 2 ºC above average, before another cool period. The 19th was 4 ºC below average, 3 ºC below average on the 20th and 2 ºC below average on the 21st. The 22nd was near average, 1 ºC above average on the 23rd, cooling to 2 ºC below average on the 24th and near average on the 25th. The 26th to 29th was 1 ºC to 2 ºC above average, near average on the 30th and 1 ºC above average on the 31st.
Most maximum temperatures were above average, with a low number of days that were cooler than average, which occurred during the first half of the month. The month started with a 4 day warm period with the 1st being 1 ºC above average, 2 ºC above average on the 2nd and 3rd and 3 ºC above average on the 4th. The 5th was near average before cooling to 1 ºC below average on the 6th. The 7th was near average and the 8th was 1 ºC below average. A warm period then followed between the 9th and 13th. The 9th to 11th was 3 ºC above average, the 12th was 5 ºC above average and the 13th was 3 ºC above average. It cooled to 1 ºC below average on the 14th and 15th. Then for the rest of the month an extended warm period followed. It started with the 16th and 17th being 2 ºC above average, 3 ºC above average on the 18th, 2 ºC above average on the 19th and 1 ºC above average on the 20th. The 21st was 2 ºC above average, 3 ºC above average on the 22nd and 6 ºC above average on the 23rd and 24th (27 ºC). The 25th and 26th was 3 ºC above average, 5 ºC above average on the 27th, 4 ºC above average on the 28th, 3 ºC above average on the 29th, 5 ºC above average on the 30th and 2 ºC above average on the 31st.
Monthly mean minimum grass temperature: 7.2 ºC (0.2 ºC lower than same month in 2018)
Lowest minimum grass temperature: 2.7 ºC on 16 July 2019 (3.3 ºC lower than same month in 2018). This coincided with the lowest minimum temperature of 5.1 ºC for the month.
Highest minimum grass temperature: 13.1 ºC on 6 July 2019 (3.6 ºC higher than same month in 2018).
Highest Minimum Grass Temperature Depression: 5.3 ºC on 15 July 2019 with a minimum grass temperature of 8.3 ºC and an air temperature of 3 ºC.
Lowest Minimum Grass Temperature Depression: 1.3 ºC on 22 July 2019 with a minimum grass temperature of 8.3 ºC and an air temperature of 7.3 ºC.
Monthly mean minimum MSL pressure: 1019.2 hPa (2.9 hPa higher than same month in 2018).
Monthly mean maximum MSL pressure: 1023.5 hPa (2.5 hPa higher than same month in 2018).
Monthly mean MSL pressure: 1021.3 hPa (1.1 hPa above average, 2.2 hPa higher than same month in 2018).
Lowest MSL pressure: 1013.9 hPa on 18 July 2019 at 2:26 PM. The same month in 2018 saw 1010.2 hPa. This is the highest monthly minimum air pressure for July, exceeding the previous record high of 1013 hPa on 31 July 2010 at 3:57 PM.
Highest MSL pressure: 1030.9 hPa on 7 July 2019 at 8:51 AM. The same month in 2018 saw 1027.7 hPa.
Monthly mean minimum relative humidity: 35.4 % (9.2 % lower than same month in 2018 and 17.2 % below average). This is the lowest on record for July exceeding the old record of 43.3 % in 2014.
Monthly mean maximum relative humidity: 84 % (6.6 % lower than same month in 2018 and 2.4 % below average). This is third lowest for July since 81.9 % in 2012.
Monthly mean relative humidity: 59.7 % (7.9 % lower than same month in 2018 and 9.8 % below average). This is the lowest on record for July exceeding the previous record of 63.1 % in 2009.
Lowest relative humidity: 7 % on 24 July 2019 at 3:03 PM (20 % lower than this month in 2018). This is the lowest monthly and daily minimum humidity for July on record exceeding the old record of 26 % on 13 July 2011 at 1:53 PM.
Highest relative humidity: 94 % on 7:54 AM on 9 July 2019 at 7:51 AM (4 % lower than this month in 2018). This is the equal second lowest monthly July high humidity on record and the equal lowest since 94 % in 2012 on 15 July at 12:00 AM.
Monthly mean minimum dew point: 3.3 ºC (3.5 ºC below average). This is the lowest monthly mean minimum dew point for July on record exceeding the old record of 3.9 ºC in 2014.
Monthly mean maximum dew point: 11.6 ºC (0.1 ºC above average).
Monthly mean dew point: 7.4 ºC (1.8 ºC below average).
Lowest dew point: -12.4 ºC on 24 July 2019 at 3:18 PM. This is the lowest monthly and daily dew point for July on record, exceeding the previous record of -0.6 ºC on 10 July 2014 at 6:35 AM.
Highest dew point: 17.7 ºC on 7 July 2019 at 1:07 PM.
Highest wind gust: 48 km/hr on 13 July 2019 at 11:09 AM. This is the third lowest July maximum wind gust and the lowest since the record low of 31.9 km/hr in 2013 on the 31 July at 10:44 AM. The maximum wind gust this month last year was 58.3 km/hr.
Highest wind speed: 25 km/hr on 15 July 2019 at 10:28 AM (Moderate Force Wind). This is the second lowest monthly maximum wind speed for July, the lowest since the record low of 22.5 km/hr in 2013 on 31 July at 1:25 PM.
Total wind run: 2731.7 km (1596.4 km higher than same month in 2018), 1603.1 km above average and 165.5 % above average. This is the highest on record for July total wind run exceeding the previous record of 1676.9 km in 2015.
Monthly mean wind speed: 3.7 km/hr (2.2 km higher than this month in 2018), 2.2 km/hr above average and 46.6 % above average (approx. 7 % above average accounting for measuring equipment changes). This is the highest on record for July exceeding the previous record high of 2.2 km/hr in 2015.
Daily mean maximum wind gust: 24.2 km/hr (6.7 km/hr lower than this month in 2018), 2.2 km/hr below average and 10 % below average.
Daily mean maximum wind speed: 12.3 km/hr, 4.4 km/hr lower than this month last year, 1.9 km/hr below average and 14.4 % below average. This is the second lowest daily mean maximum wind speed on record for July and the lowest since the record low for July of 11.6 km/hr in 2010.
Dominant direction: S (S this month last year).
Rainfall total: 17.6 mm, 15.9 mm below average (52.5 % of long term average), equal to the long term median and 66 % of the long term median. This is lower than this month last year which was 20.9 mm. Automatic rain gauge was 18.2 mm (-9.5 % of manual gauge).
Highest daily rainfall total: 11.2 mm on 7 July 2019.
Number of Rain Days (0.1 mm or greater): 10 days, 4 greater than this month in 2018 and 4.3 days above average.
Highest rainfall rate was 80 mm/hr on the 6 July 2019 at 2:09 PM. This is the highest monthly and daily rainfall rate for July exceeding the previous record high of 31.2 mm/hr on 7 July 2017 at 7:50 AM.
The highest hourly rainfall total was 5.4 mm on the 6 July 2019 at 3:02 PM.
There were 0 thunderstorms, with 0 days with thunder.
Rainfall at Ferny Grove consisted of showers with mostly light falls in the first 9 days of the month, and no rain for rest of the month
There was 14 days of morning dew.
Persistent high pressure over the second half of the month produced a 16 day period from the 16th of maximum temperature of 22 ºC or above.
For July there were 13 existing records exceeded, along with 6 records that were highest/lowest in at least 5 years.
For more detailed analysis refer to the Monthly Meteorological Report for July 2019.
Summary of Averages and Extremes for July 2019 for Ferny Grove, Brisbane, Queensland, Australia |
||||||||||||||||
|
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 |
9.5 |
23.5 |
16.5 |
14.0 |
7.2 |
-2.3 |
35.4 |
84.0 |
59.7 |
1019.2 |
1023.5 |
1021.3 |
7.4 |
24.2 |
12.3 |
0.6 |
Min |
5.1 |
20.2 |
13.7 |
6.0 |
2.7 |
-5.3 |
7 |
47 |
31 |
1013.9 |
1019.0 |
1016.5 |
0.5 |
14.0 |
6.0 |
|
Max |
14.8 |
27.2 |
19.2 |
20.5 |
13.1 |
-1.3 |
77 |
94 |
85 |
1027.7 |
1030.9 |
1029.1 |
17.7 |
48.0 |
25.0 |
11.2 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17.6 |
Summary for July 2019 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
||||||||
|
Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
+1.6 |
-9.8 |
+1.1 |
-1.8 |
-0.6 |
-4.4 |
-15.9 |
52.5 |
Min |
+0.8 |
-17.2 |
|
-3.5 |
|
|
|
|
Max |
+2.4 |
-2.4 |
|
-0.1 |
|
|
-1.2 |
|
Monthly averages and extremes for Year of 2019 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-19 |
20.8 |
32.0 |
18.5 |
34.3 |
26.4 |
-0.0 |
+1.2 |
+0.6 |
10.4 |
-134.6 |
9 |
Feb-19 |
20.9 |
31.2 |
16.8 |
36.7 |
26.0 |
+0.7 |
+1.1 |
+0.9 |
39.8 |
-122.0 |
13 |
Mar-19 |
20.4 |
31.4 |
14.1 |
41.1 |
25.9 |
+1.7 |
+3.0 |
+2.3 |
236.9 |
+112.7 |
18 |
Apr-19 |
16.4 |
26.7 |
14.1 |
30.5 |
21.6 |
+0.4 |
-0.1 |
+0.1 |
64.9 |
-30.8 |
16 |
May-19 |
13.1 |
24.7 |
4.4 |
28.0 |
18.9 |
+0.7 |
+1.4 |
+1.0 |
41.4 |
-61.6 |
16 |
Jun-19 |
10.9 |
22.5 |
4.4 |
27.7 |
16.7 |
+0.7 |
+1.4 |
+1.0 |
35.9 |
-26.0 |
15 |
Jul-19 |
9.5 |
23.5 |
5.1 |
27.2 |
16.5 |
+0.8 |
+2.4 |
+1.6 |
17.6 |
-15.9 |
10 |
YTD |
16.0 |
27.4 |
4.4 |
41.1 |
21.7 |
+0.7 |
+1.5 |
+1.1 |
446.9 |
-278.2 |
97 |
Data copyright Ferny Grove Weather 2019, Produced 12/8/2019. 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 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 usually 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 the automatic record became the official record instead, simplifying this process. Until replaced on 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.
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, while 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.