Welwyn (Hertfordshire) weather

Headline:

Heavy, possibly thundery, showers for many.

Today:

Dry with sunny spells at first, but showers will soon spread northwards across all parts from late morning. The showers will become heavy and possibly thundery in the afternoon and evening. Risk of hail. Temperatures near normal. Light winds. Maximum temperature 18 °C.

Tonight:

Further heavy and possibly thundery showers continuing early in the night. The showers gradually clearing southeastwards during the early hours. Becoming drier by dawn. A mild night. Breezy along coasts. Minimum temperature 11 °C.

Wednesday:

A cloudy start, but brightening up for many, with further heavy showers likely from late morning, but less widespread than on Tuesday. Turning cloudier with patchy rain by evening. Breezy. Maximum temperature 17 °C.

Outlook for Thursday to Saturday:

Early cloud and patchy rain soon clearing on Thursday, becoming drier and brighter, with some coastal showers. Feeling colder. Drier and brighter on Friday and Saturday. Overnight rural frost possible.

Remaining rather cold, cold in the north, but with areas of blustery showers likely spreading across much of the country with some more wintry spells over the mountains of Scotland on Saturday. Later in the weekend a more settled spell for a time is expected, along with early mist or fog, before increasing cloud and rain from the west marks a return to average temperatures, potentially rather warm at times in the south, however the new week also bringing longer spells of cloud and rain. Windiest in the northwest, generally light to moderate otherwise. Some bright spells for most as systems clear but the best of the bright weather to be found in the southeast, though even here rain likely at times through the week as fronts cross.

Initially some remains of a more progressive weather pattern with fronts moving in from the west or northwest, with drier conditions in the south and east. It is possible that these drier conditions could be seen more widely later in the month as higher pressure further north extends southwards. This would also bring an increased chance of overnight fog and frost. Temperatures will tend to be close to average overall in the south, but probably below average in the north and northwest. Toward November returning Atlantic fronts more likely again, but some signs of more settled weather remaining in the south.