March 2021 weather review

The review of the weather at Ferny Grove during March 2021 is now available.

In March 2021 overnight temperatures were close to average. Daytime temperatures were close to average but was the coolest for March in 8 years. Minimum temperatures in March were near average or above average before below average temperatures in the last week of the month. Maximum temperatures during March saw a mixture of below and above average temperatures throughout the month, with a number of near average or below average maximum temperatures in the middle of the month.

Rainfall in March was well above average with a total of 297.3 mm (239.4% of the long term average and 248.5% of the site median). Many days in the first half of the month saw light showers and rain, with a gusty thunderstorm with brief heavy rainfall on the 2nd. The 14th to 20th saw periods of drizzle and light rain with light showers before increasing wet conditions on the 21st to 23rd with drizzle, moderate to heavy rain periods and a thunderstorm. In the last few days of the month were some light showers. Most of the total rainfall in the month occurred between the 14 March and 24 March when 263.3 mm of rainfall fell and 203.3 mm was measured between the 22 and 24 March.

Long period rainfall totals until the end of March 2021 improved for all periods as compared with February 2021. Many of the long period totals became slightly above average, though the longer time periods have remained with negative anomalies. 6 monthly rainfall improved by 179.9 mm to 85.2 mm above average and 9 monthly rainfall improved by 174.6 mm to 66 mm above average. 12 monthly rainfall improved by 149.8 mm but remained 106.6 mm below average. 18 month rainfall saw an improvement of 191.2 mm and was 23.4 mm above average. 24 month, 36 month and 48 month all remained below average but have improved by 188.1 mm to 123.9 mm below average for 24 month rainfall, improved by 106.9 mm to 237.7 mm below average for 36 month rainfall and by 250 mm to 110.3 mm for 48 month rainfall. Compared with the same period in 2020 the long period rainfall totals were mixed between improving and worsening for 6, 9, 12 and 18 monthly but have worsened for 24, 36 and 48 monthly totals. However, many periods have now see lower rainfall deficiencies as compared with the start of summer in December 2020

The summary containing the key information can be found here.

The full report of more detailed analysis is available here.

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