Most areas probably starting dry and remaining noticeably warm and muggy overnight. Chance of thunderstorms arriving from the south and west before midnight, these mostly clearing later. Minimum temperature 20 °C.
Click below for a video weather forecast for Bedfordshire, Cambridgeshire, Hertfordshire, Northamptonshire and Milton Keynes
Click below for a video weather forecast for Essex, Norfolk and Suffolk
Any early morning storms clearing across the North Sea, then largely sunny and feeling hot and humid by the afternoon. Perhaps becoming cloudier later. Maximum temperature 34 °C.
Outlook for Thursday to Saturday
Remaining hot and humid for Thursday and Friday with a risk of showers or thunderstorms. Some uncertainty for Saturday with further thundery showers possible, but sunshine is also likely