Temperature fell sharply early then stabilised through the early hours.
Went into freefall again at about 6.00 am but the interesting thing was
this reversed sharply at exactly sunrise 7.50 a.m. At exactly this point
it reversed and started rising at the same sharp rate it had been
falling. There is usually a levelling off and a lag before it starts
rising but this was like a switch being turned on.
Min Here -3.9C

http://www.laindonweather.co.uk/trends.htm

Dave, S.Essex