High pressure keeps the weather settled across the southern half of the country despite a cold front moving through later this weekend. Further north there will be some showery rain at times.
We've generally had a dryish September, despite a couple of unsettled spells. Its also been quite sunny particularly across central, eastern and southern parts and you can expect more of the same today, as an anticyclone to the South dominates the scene at first. Later, a cold front brings cloud and some rain to the North and West of Scotland and parts of Northern Ireland, before weakening as it crosses England and Wales on Sunday, giving nothing more than cloud and patchy drizzle by then.
It's a cold start over much of England and Wales, with temperatures first thing around -1.4C at Benson. There are also a few mist or fog patches mostly in rural parts of the Midlands and the Home Counties but these'll soon clear, to leave a fine day with lots of sunshine again in most regions. Later though Cumbria and the far North of England may begin to see more in the way of cloud as a South Westerly wind freshens a little. This'll feel chilly particularly during the morning, but with lighter breezes in the South, top temperatures of 15 to 18C will feel reasonably pleasant in the sunshine.
The South and East of Scotland and most of Northern Ireland also start fine if though a little chilly. Sunny spells give way to cloud though into the afternoon as a South West wind freshens, but it should stay dry. Over the remainder of Scotland and towards Derry and Antrim there'll be showery bursts of rain moving in, with gusts of wind to 50mph over Highland and exposed coasts and hills for a time that'll make it feel chilly. Top temperatures only 11C in the far North West but 12 to 14 more generally, with 15 or 16C possible briefly in sheltered parts Fife, Lothian and The Borders.
Much of England and Wales see clear spells into a chilly evening, and it'll remain this way across southern and central parts overnight. Light winds allow a few mist or fog patches and 'pockets' of frost to form again in rural areas, with lowest temperatures about 0 to 3C. A weakening cold front moving into northern England however, will bring cloud later and some patchy rain. There'll also be more of a Westerly breeze here, which should prevent temperatures from falling below 3 to 5C.
After some rain in the East and South into the evening, most of Scotland and Northern Ireland see clearing skies overnight. This coupled with a lighter westerly breeze for a time, could allow a touch of frost to form in some sheltered glens, before freshening West to North West winds bring showers to the North and West of Scotland by morning. Some could be heavy across Highland and the Northern Isles and wintry on the highest hills, with lowest temperatures mostly in the range 1 to 5C.
As a weak cold front drifts slowly South across England and Wales, there'll be more in the way of cloud here on Sunday, after a fine start in the South and South East. On the front itself there'll be patchy light rain or drizzle, but it'll continue to be mainly dry apart from the odd shower in the West later. Most parts though will see some sunshine, with the best of this probably East of the Pennines and across Lincolnshire and the East Midlands into the afternoon. It'll continue to feel chilly in a mostly moderate locally fresh West to North West wind, with top temperatures only 13 to 16C.
Scotland and Northern Ireland see sunny spells on Sunday, but a chilly West to North Westerly wind will bring showers. These'll be most frequent over Highland the North and North East of Scotland where some will be heavy and wintry in the mountains. Elsewhere the showers should be fewer, with sheltered parts of southern Scotland and Down and Armagh likely to see the best of the sunny spells. Despite these, temperatures will get no higher 10C in the North and 12 to 14C more generally.
After dark Northern Ireland, Wales and the South West should become mainly dry in a lighter North Westerly breeze, Clear spells may allow a touch of frost in sheltered rural areas, with lowest temperatures 1 to 4C. Other western parts may also see clear intervals but elsewhere there'll be scattered showers most frequent in the North and East. Some could be wintry on higher Scottish hills in a blustery North West wind, which although cold should prevent temperatures from falling below 4 to 7C.
