The week ahead brings a marked transition from unusually warm early October conditions to something more recognisably autumnal.
Rain, showers and strengthening winds will all feature, with temperatures returning closer to average as fresher air spreads southwards.
A change to more autumnal weather
After a notably mild start to October, the weather will turn cooler and increasingly unsettled this week. A weather front currently lying across the UK marks the boundary between warm air in the south and fresher conditions farther north. As this front moves south through Tuesday and Wednesday, temperatures will fall and rain will become heavier in places.
A north-south split on Tuesday
Tuesday will begin with fog in some southern areas, potentially causing difficult travelling conditions. Once the fog lifts and cloud begins to break, southern parts should see some brighter weather, with many places staying dry for much of the day.
Central areas will be cloudier and occasionally damp as the front lingers. Across Scotland, sunny spells will be interspersed with frequent showers, some of which could be heavy and accompanied by an isolated rumble of thunder.
Temperatures will vary considerably across the country. Southern areas will remain unusually warm for early October, while northern parts will feel much fresher, with temperatures locally a little below average.
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Rain intensifies into Wednesday
During Tuesday evening and overnight, the front across central Britain will become more active, while another area of rain moves northwards from the south. The two zones will merge during the early hours of Wednesday, bringing a cloudy and wet start across much of England and Wales. Northern areas will begin drier and clearer, with a touch of grass frost possible in rural locations and even an air frost in the most susceptible spots.
Rain will move eastwards during Wednesday, becoming increasingly confined to eastern areas later in the afternoon. South-eastern England may hold on to the wet weather into the evening. Behind the rain, numerous showers will affect Scotland, where some could be heavy and accompanied by blustery winds.
Wednesday is likely to bring a substantial fall in temperature, particularly in the south, where highs will drop from the low 20s to the mid or possibly high teens. The heaviest rain is expected across parts of northern and, especially, eastern England. Some model runs indicate that isolated locations could receive more than 50mm, with a significant amount potentially falling within only a few hours.
A chilly but brighter start to Thursday
A brief ridge of high pressure will build overnight into Thursday, allowing many areas to begin the day dry and clear. It will be chilly, with a touch of frost possible in places. A few showers will affect eastern areas and, in the fresher air, some could turn wintry over the highest Scottish mountains, which is not unusual for October.
Cloud and rain will then arrive across Northern Ireland before reaching parts of western England, Wales and Scotland later in the afternoon. Temperatures will be around or slightly below average, although eastern areas could reach 16 or 17°C. With light winds and some sunshine, it should feel pleasant enough here.
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Wet and windy towards the weekend
Friday looks unsettled as rain in the west gradually spreads eastwards. The rain could be heavy over western hills, particularly across western Scotland and northern England, although uncertainty remains over how quickly it will clear.
Saturday is expected to be blustery and showery for many. A front near the English Channel could produce more persistent rain across southern areas. Another ridge of high pressure may then bring a quieter start to Sunday, before a potentially deep area of low pressure develops to the northwest and introduces more unsettled weather later in the weekend. Details remain uncertain, so forecasts should be monitored as the week progresses.
Keep up to date with weather warnings, and you can find the latest forecast on our website, on YouTube, by following us on X and Facebook, as well as on our mobile app which is available for iPhone from the App store and for Android from the Google Play store.
