Snow will begin to fall at the end of next week, the Met Office has warned.
North Wales and Scotland could be hit by 5cm next Friday, while up to 1cm is set to land in the midlands.
And in the final week of the month, temperatures will drop sharply to well below average.
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Snow will cover the whole of Northern Ireland and Scotland, and the very north of England on January 21.
The following day it will move to the southeast of England with 2cm expected in East Anglia and Greater London.
Cornwall and Devon, northwest Wales and northwest Northern Ireland will also get a couple of centimetres.
There are indications of a very cold last week of January.
"It's looking like from January 19 until the beginning of February the weather will be fairly changeable and unsettled, with rain and strong winds,” says Met Office spokesman Dean Hall.
"Snow is expected in higher grounds and towards lower ground up north.
"But generally it will be dry and bright.
"The temperature is a on a downward trend towards some very cold weather towards the end of the month, bringing an enhanced chance of snow and frost.
"Cold spells will be interspersed with wetter and milder ones.
"There are indications of a very cold last week of January, starting at January 20-21."
Forecasters have already warned of a return for "Beast from the East" in March.
The same UK weather warnings and patterns from last year that provoked the cold snap have resurfaced.
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