Feb 022021

January 2021 was cooler than average (2.57°C versus an average of 4.04), wetter than average (92.80 mm versus an average total of 42.51) and calmer than average (a wind run of 2554 miles versus an average of 3361).

January was a cold month with an average temperature of only 2.6°C, the second coldest ever here, beaten only by the 1.2°C recorded in 2010. The highest temperature was 10.4°C recorded on the 20th at 09:01. The minimum temperature was -4.8°C, recorded at 07:55, the lowest temperature since -6.7°C was recorded on January 31st 2019. The average daily high temperature was 5.0°C, with the average low daily temperature being 0.0°C, both 1.4°C below the January means.

The warmest day was the 20th with an average temperature of 9.2°C, while the coolest day was the 7th with an average temperature of -1.9°C. There were 16 frost days. On the 24th, the maximum temperature, recorded at 14:00, was only 0.1°C, the lowest daily maximum since -0.7°C was recorded on March 18th 2018. The average wind chill in the month was 1.4°C and the average dew point was 1.5°C. The high dew point was 9.7°C at 19:01 on the 20th. There were 9.6 hours of sunshine in the month, with the sunniest day being the 22nd with 2.98 hours of sun recorded.

Rainfall in the month was 92.8 millimetres recorded on 28 days. The yearly total was 208% of the average for the end of January. The wettest day was the 28th when 16.2 millimetres was recorded. The highest rain rate of 52.2 millimetres per hour was recorded at 22:20 on the 20th. Snow was recorded on 8 days and totalled 82.5 millimetres, the highest snowfall since 108.0 millimetres was recorded in March 2018. On the 23rd, 60 millimetres (2.4 inches) of snow was recorded. This was the most snowfall in one day since 68 millimetres was recorded on March 18th 2018.

The highest barometric pressure of 1030.9 millibars was at 10:37 on the 15th. The lowest pressure was 967.8 millibars at 22:11 on the 20th. The average pressure in the month was 1009.3 millibars. The highest humidity was 100% and the monthly average humidity was 93%. The lowest humidity was 73% at 13:19 on the 22nd.

Wind speeds were lower than average, with the highest wind gust speed of 30 mph being recorded at 02:48 on the 21st. The maximum wind speed was 16 mph at 12:01 on the 11th. The wind run was 2553.9 miles, 1105.7 miles below the January average. The average gust speed in the month was 5.1 mph, and the average wind speed was 3.5 mph. The predominant direction was southerly (170°).

The maximum high solar radiation recorded at 13:07 on the 21st was 438 w/m². The average solar radiation for the month was 25 w/m². The highest U.V. Index was 0.5 recorded at 12:09 on the 25th, the first time a reading above 0.0 has been recorded since December 13th 2020.

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