A weather front will bring showery rain to western and northern regions today, as those further southeast enjoy warm sunny spells. Heat then starts to build for the end of the week with 35c on the cards in the southeast.
A waving front is giving showery rain today, affecting northern England, North Wales and the North Midlands. It'll then move North into southern and central Scotland later. Further North still it's brighter with some sunshine towards Aberdeen and around the Moray Firth, but Highland and the Northern Isles, in particular, will see a few showers. Showers over the North Midlands will soon clear, before further showery rain some heavy moves into Northern Ireland, Wales, the West and the West Midlands. Across the East and South cloud amounts vary but it'll be mainly dry here with sunny intervals, these mostly over East Anglia, the South East and towards the East coast.
In a humid day, it becomes very warm in the East and South East, with top temperatures between 24 and 26C. Elsewhere it'll be somewhat cooler in a mostly moderate or fresh South to South West wind, with temperatures up to 20 to 22C fairly generally and 15 to 19C in the far North and across Northern Ireland.
The East and South-East have a warm, summery evening, with variable amounts of cloud giving the odd shower, but most parts here stay dry after dark. Elsewhere there'll be a lot of cloud into the evening giving some showers before clearer conditions move into more western areas during the night. The South Westerly wind continues to bring humid air to the East and South where temperatures fall no lower than 15 to 17C, with a slightly fresher 12 to 14C more likely elsewhere.
Thursday sees a fresh southerly wind bringing further patchy rain or showers to the North and West of Scotland and Northern Ireland. Top temperatures here 15 to 18C, but 20 to 22C over Armagh and Down where it'll be brighter. While the odd shower is possible, England, Wales and South East Scotland are mainly dry, but still with variable cloud. It'll be humid and become very warm, especially where you see some sunshine in a mostly light South or South Easterly breeze. Maximum temperatures across the East and South 25 to 28C, with 22 to 24C more likely elsewhere.
It'll be a warm, summery evening over much of England, Wales and South East Scotland, but with variable amounts of cloud. The odd shower is possible, but most parts have a dry night, and with light winds, a few mist or fog patches may form briefly around dawn across rural parts of central southern England where skies clear. Over West Scotland and particularly Northern Ireland, a southerly wind will bring showers some perhaps heavy and thundery across the province after dark. For most, it'll be a humid night, with temperatures not falling below 13 to 17C.
The heat seems to like the aptly named Friday at the moment, when the thermometer will clear a sweltering and humid 30C again over parts of England, with 34-35C in and around London.
The mini-heatwave then tends to break from the West overnight Friday and into Saturday with showers some heavy and thundery about. Winds then turn into North or North-East introducing somewhat cooler weather by Sunday, but it'll remain warm, and it eventually becomes mostly dry.
