Cool with sunshine and showers for many today and Saturday, locally heavy with hail and thunder. Cold with frost in places Saturday night, then Sunday seeing fewer showers, light winds and a little warmer.
Although a big area of high pressure out in the Atlantic is blocking Atlantic depressions from crossing the UK, it is pulling a northerly flow from polar regions across us, so the weather has a decidedly autumnal feel at the moment, with cool and showery days and cold nights. The showers will ease and winds will become lighter by Sunday, as the high to the west topples over the UK, so it will turn drier and a little warmer. Early next week is looking largely fine and dry with a ridge of high pressure, though by mid-week low pressure returns to the northwest, bringing cloud and rain, though with winds from the southwest next week, it will feel a little warmer, certainly nights will be less cold than now.
For now, temperatures were widely in single figures at dawn, with central, southern and eastern England along with parts of Wales the coldest parts of Britain where we’ve seen clearest skies overnight. Temperatures fell as low 3C in East Anglia and 4C in Kent.
Although many are starting dry and bright and chilly, there are some heavy showers running in from the coast across Wales and also SW England, while a few bands of showers are moving south across northern Scotland and northern England too. Showers will become more widespread across Britain through the day, as the sun warms the lower layers of the cool northerly airmass and builds the shower clouds. Some of the showers will be heavy with hail and thunder, particularly across England and Wales. However, like yesterday, some places will miss the showers and stay dry.
Rather cool for mid-September in the northerly or northwesterly breeze, but feeling pleasant in the sun still with shelter from the breeze. Temperatures reaching 13-14C across Scotland and Northern Ireland, 14-16C across England and Wales.
Showers will generally ease this evening before fading overnight to leave clear spells which will allow temperatures to fall widely into single figures, low enough for a touch of frost in sheltered rural areas. However, showers will likely continue towards eastern coasts of Scotland, northern England and also down across west Wales and SW England – where they maybe heavy.
Rinse and repeat on Saturday, with a cool and unstable northerly flow producing showers, locally heavy with hail and thunder, though there will be sunny spells between the showers and some places may escape the showers. Northern Scotland turning drier and sunnier through the day. Temperatures similar to today, 13-15C.
Showers easing Saturday night and with clear skies and light winds it will turn cold, into low single figures in rural areas, with some in the north and west waking up to a frost on Sunday morning. Sunday itself will see more areas dry and sunny, there will be showers and these mostly popping up across central, southern and eastern England along with south Wales, but very hit and miss. With lighter winds, it will be warmer too, temperatures reaching 16-18C across southern areas, 13-15C in the north.
Monday and Tuesday look like fairly pleasant days, thanks to a ridge of high pressure, most places fine with some warm sunshine, though there could be some showers popping up across eastern England on Monday and a weather front moving in from the west may bring cloud and rain to Ireland and Northern Ireland later on Tuesday. By mid-week, there are signs of a frontal system arriving off the Atlantic bringing cloud, rain and strengthening winds across northern and western areas, only making slow progress eastwards for the rest of the week, as high pressure hangs on towards the east.
