Largely clear across southeastern parts this evening, leading to an early frost. Some cloudier, less cold conditions elsewhere, these slowly edging east although not quite reaching East Sussex and Kent. Minimum Temperature -5C.

Monday:

A sunny but cold, frosty start in the east. Rather cloudy in the west but some hazy sunshine for most during the afternoon. Becoming breezy during the evening. Maximum Temperature 6C.

Outlook for Tuesday to Thursday:

Rain overnight, clearing to icy patches and sunshine Tuesday but some wintry showers in the west. Staying cold Wednesday and Thursday, with sunny spells, further isolated showers, and overnight frosts.

Day 6 to 15

On Friday, southeastern areas are likely to stay dry, bright and cold, perhaps with some freezing fog patches at first. Elsewhere it could turn less cold as a band of rain and drizzle moves in from the west, with some hill snow possible in the north. However, there is a small chance that it could stay dry, bright and cold across much of the country with wintry showers in the east. Thereafter, an unsettled period of weather is possible with further band of rain moving southeast across the UK, with brighter and showery weather in between. Snow is also possible in some northern and central areas at times as it turns increasingly cold with overnight frosts, although some brief milder interludes are possible too.

Day 16 to 30

Changeable conditions are most likely at first, with spells of rain, strong winds and some snow at times. However, very cold conditions are more likely to develop through this period with a greater chance of northerly and easterly winds. This brings an enhanced risk of snow and widespread frosts, however there is currently a large amount of uncertainty. The driest and brightest weather is likely to be in the northwest. The conditions described above could still be interspersed by some milder and wetter interludes, most likely across southern parts of the British Isles, and this would bring a risk of significant snow and ice at times.

Met Office : SE : 2019-01-20T13:16:33