At Ferny Grove in March overnight temperatures were below average and the lowest in 6 years. Daytime temperatures were close to average as a result of many cloudy days with rainfall. March rainfall at Ferny Grove was close to average. Mean relative humidity was near average, mean dew point was near average and mean air pressure was above average. There were 1 thunderstorm (1 thunder day).
Mean minimum temperature: 18.7 ºC, 0.6 ºC below average and 1.7 ºC lower than same month in 2019. This is the lowest for March since 18.6 ºC in 2014.
Mean maximum temperature: 29.1 ºC, 0.5 ºC above average and 2.3 ºC lower than same month in 2019.
Mean temperature: 23.9 ºC, equal to long term average and 2 ºC lower than same month in 2019. This is the lowest since 23.8 ºC in 2014.
Lowest temperature: 15.1 ºC on 19 March 2020 at 5:45 AM. Same month in 2019 was 16.8 ºC.
Highest temperature: 35.2 ºC on 2 March 2020 at 2:33 PM. The same month in 2019 was 36.7 ºC.
Lowest maximum temperature: 20.9 ºC on 9 March 2020 at 9:00 AM. This is the lowest monthly lowest maximum daily temperature for March on record, exceeding the previous record low of 21.9 ºC in 2019 on 27 March at 12:40 PM. This month in 2019 was 21.0 ºC.
Highest minimum temperature: 24.4 ºC on 6 March 2020 at 3:50 AM. This is the highest monthly March highest daily minimum temperature on record, exceeding the previous record high of 24.2 ºC in 2015 on 26 March at 6:20 AM. This month in 2019 was 22.9 ºC.
In March minimum temperatures saw above average minimum temperatures in the first week before below average temperatures during two periods during the rest of the month interspersed by a short period of warmer temperatures. The 4th to 8th was 2 ºC to 3 ºC above average during the warm spell at the start of the month. The cool spells saw temperatures that were between 1 ºC and 4 ºC below average.
Maximum temperatures in March saw below average temperatures during some days in the middle of the month and later in the month. There were above average maximum temperatures in the first week and some short spells in the second half of the month. The first week saw a 7 day period of above average temperatures that were between 2 ºC and 7 ºC above average. A 10 day period of cooler temperatures followed from the 10th with some days of relatively close to the long term average and as much as 4 ºC below average. A 3 day warm spell followed from the 20th of 2 ºC to 5 ºC above average. The remainder of the month saw close to average or below average temperatures.
Mean minimum grass temperature: 17.5 ºC (1.9 ºC lower than same month in 2019).
Lowest Minimum Grass Temperature: 13.8 ºC on 18 March 2020 (1.9 ºC higher than same month in 2019).
Highest Minimum Grass Temperature: 22.8 ºC on 6 March 2020 (1 ºC higher than same month in 2019). This coincided with the highest minimum air temperature of 24.4 ºC for the month.
Highest Minimum Grass Temperature Depression: 2.7 ºC on 17 March 2020 with a minimum grass temperature of 14 ºC and an air temperature of 16.7 ºC.
Lowest Minimum Grass Temperature Depression: 0.2 ºC on 27 March 2020 with a minimum grass temperature of 17.5 ºC and an air temperature of 17.7 ºC.
Mean minimum MSL pressure: 1014.2 hPa (2 hPa higher than same month in 2019).
Mean maximum MSL pressure: MSL Pressure: 1018.4 hPa (1.3 hPa higher than same month in 2019). For March this is the highest since 1019.1 hPa in 2014.
Mean MSL pressure: 1016.3 hPa (1 hPa above average, 1.6 hPa higher than same month in 2019).
Lowest MSL pressure: 1007.3 hPa on 6 March 2020 at 4:33 PM. The same month in 2019 saw 1004 hPa. This is the equal second highest monthly minimum air pressure for March.
Highest MSL pressure: 1024.5 hPa on 18 March 2020 at 8:48 AM. The same month in 2019 saw 1022.9 hPa. This is the second highest March monthly maximum air pressure and the highest since the current record high of 1029 hPa in 2010 on 12 March at 11:59 AM.
Mean minimum relative humidity: 47.4 % (1.8 % higher than same month in 2019 and 2 % below average). This is the second lowest on record for March and the highest since 62.3 % in 2018.
Mean maximum relative humidity: 87.3 % (2.5 % lower than same month in 2019 and 1.3 % below average). This is second lowest on record for March.
Mean relative humidity: 67.4 % (0.3 % lower than same month in 2019 and 1.7 % below average). This is the lowest on record for March exceeding the previous record low of 67.7 % in 2019.
Lowest relative humidity: 28 % on 21 March 2020 at 1:14 PM (16% higher than this month in 2019). This is the second lowest monthly minimum humidity for March on record and the lowest since the current record low of 12% in 2019 on the 12 March at 2:45 PM.
Highest relative humidity: 98 % on 30 March 2020 at 6:52 AM (1 % lower than this month in 2019).
Monthly mean minimum dew point: 14.6 ºC (0.6 ºC below average). This is the lowest monthly mean minimum dew point for March on record exceeding the previous record low of 15.7 ºC in 2019.
Monthly mean maximum dew point: 19.5 ºC (0.4 ºC below average). This is the lowest monthly mean maximum dew point for March on record exceeding the previous record low of 21.5 ºC in 2019.
Monthly mean dew point: 17 ºC (0.5 ºC below average). This is the lowest monthly mean dew point for March on record exceeding the previous record low of 18.6 ºC in 2019.
Lowest dew point: 9.6 ºC on 16 March 2020 at 3:48 PM. This is the second lowest monthly minimum dew point for March on record.
Highest dew point: 24.6 ºC on 7 March 2020 at 8:38 AM.
Highest wind gust: 42 km/hr on 13 March 2020 at 12:50 PM. This is the lowest March maximum wind gust since 39.5 km/hr in 2011 on the 5 March at 6:59 PM. The maximum wind gust this month in 2019 was 46 km/hr.
Highest wind speed: 17 km/hr on 15 March 2020 at 1:54 PM (Light Force Wind). This is the lowest monthly maximum wind speed for March on record, exceeding the previous record low of 17.8 km/hr in 2012 on the 6 March at 9:00 AM.
Total Wind Run: 3188.9 km (70.6 km higher than same month in 2019), 689 km above average and 27.5 % above average. This is the highest on record for March total wind run exceeding the previous record high of 3118.3 km in 2019.
Mean wind speed: 4.3 km/hr (0.1 km lower than this month in 2019), 1 km/hr above average and 30 % above average. This is the highest on record for March exceeding the previous record high of 4.2 km/hr in 2019.
Daily Mean Maximum Wind Gust: 17 km/hr (1.4 km/hr lower than this month in 2019), 3.5 km/hr above average and 15.8% above average. This is the lowest daily mean maximum wind gust for March since 24.3 km/hr in 2014.
Daily Mean Maximum Wind Speed: 12.6 km/hr, 0.6 km/hr lower than this month in 2019), 3.8 km/hr above average and 43.6 % above average. This is the second lowest daily mean maximum wind speed on record for March and the lowest since the current record low of 9.9 km/hr in 2012.
Dominant Direction: S (NE this month last year).
Rainfall total: 142.4 mm, 18.2 mm above average (114.7 % of long term average), 22.8 mm above the long term median and 119% of the site median. This is lower than this month last year which was 236.9 mm. Automatic rain gauge was 117.8 mm (-24.6 % of manual gauge).
Highest daily rainfall total: 43.8 mm on 7 March 2020.
Number of rain days: 15 days, 3 less than this month in 2019 and 2.5 days above average. This is the lowest for March since 9 days in 2015.
Highest rainfall rate: 192 mm/hr on the 6 March 2020 at 5:27 PM. This is the second highest monthly and daily rainfall rate for March and the highest since the current record high of 217.2 mm/hr in 2019 on 15 March at 4:20 PM.
Highest hourly rainfall total: 40.6 mm on the 6 March 2020 at 5:47 PM. This is the highest hourly rain for March, exceeding the previous record of 36.3 mm in 27 March 2018 at 12:10 PM.
In the first half of the March were showers and thunderstorms, with light rain and drizzle after the first week. A severe thunderstorm of the 6th brought extremely heavy rainfall of 40 mm in 30 minutes. Some light showers and drizzle in the last week of the month.
There were 13 days of morning dew.
Warm and sunny at the start of the month before cloudy skies between the 6th and 13th with cool days and rainfall. Later in the month with some further showers and with some more cloudy and cool days.
A high pressure ridge and onshore winds along the southern Queensland was present during much of the month. The rainfall in the first half of the month was as a result of a persistent inland surface trough aided by moist onshore winds.
Short term rainfall totals of 6 to 12 monthly rainfall totals improved a little further and is above average after the third month of near or above average rainfall totals.
For March there were 10 existing records exceeded or equalled, along with 7 records that was highest/lowest in at least 5 years.
For more detailed analysis refer to the “Monthly Meteorological Report for March 2020”
Summary of Averages and Extremes for March 2020 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 |
18.7 |
29.1 |
23.9 |
10.4 |
17.5 |
1.3 |
47.4 |
87.3 |
67.4 |
1014.2 |
1018.4 |
1016.3 |
17.0 |
25.4 |
12.6 |
4.6 |
Min |
15.1 |
20.9 |
20.7 |
0.5 |
13.8 |
0.2 |
28 |
66 |
50 |
1007.3 |
1011.5 |
1009.4 |
9.6 |
17.0 |
7.0 |
|
Max |
24.4 |
35.2 |
28.4 |
17.2 |
22.8 |
2.7 |
73 |
98 |
82 |
1020.9 |
1024.5 |
1022.7 |
24.6 |
42.0 |
17.0 |
43.8 |
Total |
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|
|
142.4 |
Summary for March 2020 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 |
-0.0 |
-1.7 |
+1.0 |
-0.5 |
+3.5 |
+3.8 |
+18.2 |
114.7 |
Min |
-0.6 |
-2.0 |
|
-0.6 |
|
|
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|
Max |
+0.5 |
-1.3 |
|
-0.4 |
|
|
+93.6 |
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Monthly averages and extremes for Year of 2020 to Date for Ferny Grove, Brisbane, Queensland, Australia |
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|
Temperature |
Temperature Anomaly from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
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|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
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|
Jan-19 |
21.9 |
32.2 |
18.6 |
35.4 |
27.0 |
+1.2 |
+1.6 |
+1.4 |
183.3 |
+38.3 |
15 |
Feb-19 |
21.2 |
30.4 |
19.6 |
37.6 |
25.8 |
+0.9 |
+0.5 |
+0.7 |
389.2 |
+227.4 |
20 |
Mar-19 |
18.7 |
29.1 |
15.1 |
35.2 |
23.9 |
-0.6 |
+0.5 |
-0.0 |
142.4 |
+18.2 |
15 |
YTD |
20.6 |
30.6 |
15.1 |
37.6 |
25.6 |
+0.5 |
+0.9 |
+0.7 |
714.9 |
+283.9 |
50 |
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 2020, Produced 18/4/20. 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, while. 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”.