A marked change to cooler, unsettled weather spreading south.
Most parts largely sunny, after any mist clears; turning very warm again by afternoon. Rain in the far northwest sinks south, with the odd downpour possible, most likely in south and east Scotland, followed by a sharp downturn in temperatures.
Cloudier skies and outbreaks of rain develop more widely, although not reaching the southeast, while some parts dont see much. Freshening breeze. Mild in the south but chilly in north.
Cloud and rain continuing south with possible localised downpours and thunderstorms across southern England, perhaps south Wales. Turning drier in the north. All parts much cooler to end the day.
Outlook for Thursday to Saturday:
Persistent rain soon clearing Southeast England, then sunshine and showers everywhere, mainly East, Thursday and Friday. Cloud, rain and gales in Northeast spreading to East Saturday, elsewhere sun and showers.