Welwyn (Hertfordshire) weather

Headline:

Frosty night with cloud in the west, spreading east.

This Evening and Tonight:

Mostly cloudy, perhaps some clear spells towards the end of the night. Chance of mist, patchy fog and a frost for a time which could lead to icy stretches. Light winds. Minimum temperature -2 °C.

Monday:

Staying dry, rather breezy and milder. Cloudy to start but bright or sunny spells soon developing. Overnight frost possible. Maximum temperature 5 °C.

Outlook for Tuesday to Thursday:

Some sunny or clear spells with mostly light winds. Temperatures gradually rising, reaching average values by Wednesday.

High pressure will lie close to the southeast of the UK initially, with generally settled conditions across many parts. Cloud amounts will be variable, with some frost and fog in the south and east, this slow to clear, but some rain in the far northwest. A weakening frontal system looks like it will edge east across the UK over the weekend, before high pressure briefly builds back in from the west in its wake. Low pressure then seems likely to increasingly influence the UK weather later in the period, with some rain and windier conditions affecting most if not all parts. Temperatures are likely to be generally a little above average, especially in the north, though more frost and fog patches are likely under clearer skies and lighter winds.

A dominant flow from the Atlantic looks likely to produce an unsettled, milder and windier than average period. This is likely to result in areas of rain and periods of stronger winds affecting most if not all parts of the UK at times, though with the wettest and windiest weather probably occurring towards the north and west. However, the potential for brief colder spells with associated frost, ice and snow remains, following any deep lows crossing the region.