The weather forecast from the Met Office:

A largely fine day again today, moderate easterly winds and with warm sunshine as temperatures rise to 21 or 22 Celsius. Turning cloudy in the evening with the risk of showers towards dusk and overnight (these potentially thundery).

Mist and low cloud will develop early on Thursday for many places at first, with perhaps the odd shower during the morning. However all clearing up to allow sunshine during the afternoon. Temperatures will be markedly cooler.

Friday will then be dry with sunny spells, moderate southerly winds and top temperatures up to 17 Celsius.