Fog is causing concerns this morning for SW Britain. It is dense in places and affecting the morning rush hour. Southern Britain is still calm and settled under high pressure but further north there is a brisk west to SW wind. As a low pressure heads towards Norway its cold and occluded fronts will sweep down to Scotland today. This brings more rain and cloud but will bring colder air right down through the UK by Friday.
The high pressure manages to build back over the UK, the front weakens but there will be a noticeable difference. The air will feel colder as it feeds down from the Arctic and there will be frost in places by the weekend. Coldest for northern mainland Scotland early Saturday but SW England will manage to stay in milder air. Everywhere will be in milder air by Sunday afternoon with temperatures in the mid to high teens. Even a few spots reaching 19 or 20C in the southerly breeze
So, a few ticks for Autumn ‘I Spy’ weather: fog, frost, chilly evenings then warm sunshine and fair weather. A cold front from the north later today and another front from the Atlantic bringing rain for Monday. No sign of an autumn storm yet or any snow.
For those on half term next week it looks to be the more usual flow off the Atlantic. Blustery showers and longer spells of rain from the west. Temperatures around average. It’s a bit too far ahead to say for later October. It’s been quite mild for October recently; it will now feel cooler. Windy, more so in the north and less rain for SE Britain as the lows are usually away to the northwest. Scotland is looking for rain after a very dry summer with Scottish Water asking for water efficiencies from customers. Southeast England and London saw plenty of rain this summer so the storage here is okay this year.
There are two areas for most of today. Most start off dry with variable amounts of cloud. So, some have sunny breaks, others bright or fair. The cloud will be thicker for western Wales and by lunchtime over northern counties of Northern Ireland and southern Scotland as the frontal bands edge southwards. Warm for a time for Aberdeenshire ahead of the rain in a SW wind. There will be some heavier rain for western Scotland in the afternoon as the fronts make their way down from the north. The wind veers and it will feel colder. Lerwick will change from 12C to 7C by mid-afternoon. The central swathe of the UK will be in the mid-teens and southern Britain could reach 15 to 18C in sunnier spots.
The rain bands move steadily southwards fading by dawn on Friday on a line from the Thames estuary cross to the Bristol Channel and it will be a cooler day with an air frost for some inland parts of Scotland and Northern Ireland. A ground frost is likely for northern eastern England. Really quite a change.
A weak frontal band topples in from the west during Saturday night so not as cold, but it will be cloudy and damp with a breeze, heavier rain for the NW Highlands. Sunday looks more settled and mild. Next week looks decidedly unsettled.