Cold day and very cold night

The weather front yesterday brought thick cloud resulting in no sunshine and a maximum of 12.3C, some 4C below the average, the coldest day since the end of April. Overnight the thermometer dropped very quickly between 2am and 4am so that a minimum of 4.2C was recorded just after 4.30am. By 08.00 the thick cloud was beginning to thin as the weather front continued to move slowly northwards and the sun began to break through, the temperature had by then recovered to 9.2C
Yesterday, with the drying north-easterly breeze, another 5.6mm of moisture had evaporated from ground sources and plant life. This brings the total lost from evaporation this month to almost 77mm with rainfall at 53mm.