Sunday was the coolest day this month thanks to the flow of Arctic air, on a night northerly, that restricted the temperature to 10.5C, which was 4.2C below the long-term average and the coldest day since 21st April. Overnight, under relatively clear skies, the temperature dropped steadily to a low of -1.3C at 05.35 on Monday morning. This was the first air frost of autumn and the coldest night since 25th April.
Monday saw muted, weak sunshine to start the day due tp much cloud cover even though we are under a high pressure system. The cold days and nights have seen the ground temperature at a depth of 5cm, read at 08.00, sink to 3.9C today compared to 16.8C at the start of the month. The anticyclone has repositioned so the air mass is forecast to come from the east today.
