The often hazy sky yesterday obscured the full strength of the sun for much of the day with only 0.58 hours of strong sunshine, although the thermometer did rise to its highest for a week with a maximum of 6.2C, still below average for January. It was another day with virtually no movement of the air for long periods with three occasions when the anemometer registered a maximum of just 6mph.
Overnight the thermometer dropped to -3.6c at 05.20 but thin cloud since that time has meant the temperature has risen to -1.7C at 08.00. There was no fog at the time when readings were taken.
The average number of air frosts for January, over the past 32 years, is 11 with the total for 2017 being 14 to date. The record for air frosts occurring in January was set in 1985 and 2010 when there were 22 days when we awoke to below freezing mornings.
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