Sharp air frost returned overnight

A maximum of just 13.5C on Monday was the coolest day for over a week and 0.8C below average. The northeasterly wind was brisk again gusting to 22mph.

It was another dry day, the fifteenth consecutive with the UV level a little lower than previous days only just in the ‘High’ category.

The thermometer fell sharply during the late evening producing a sharp air frost, the first since the 20th. A minimum of -1.9C was logged at 05.57 on Tuesday morning. We have now experienced 15 nights with an air frost when the average over the past 37-years is 5.2. The previous record was 10 April air frost in 2013 and 1997.

The barometric pressure fell steadily on Monday as the high pressure slowly slunk away and a minor depression began its progress southwards across the country. The reading at 08.00 on Tuesday was 1011.9mb, a drop of 12mb in the past twenty-four hours and the lowest pressure all month.

Tuesday began with a cloudy sky that muted the sunshine but after 07.30 brief sunny intervals appeared through gaps in the the cloud. With a temperature of 2.7C at 08.00 it was the coldest start to a day for over a week

The significant change in the weather is that early this morning the wind that for days came from from the north east and east has backed into the south and southwest so there is a warmer feel to the air.