Much of the UK could be covered in a "nice and pretty" light dusting of snow in the middle of next week as it is set to get "noticeably colder".
Forecasters do not expect the snow to cause any disruption and believe temperatures will climb again by next weekend.
With temperature highs today in London of 10C and even higher in parts of Scotland at 13C, people everywhere will notice a significant drop as Tuesday will bring highs of between just 4C and 6C.
Freezing temperatures of between zero and -3C are expected "quite widely" on Tuesday night.
Rachel Vince, a senior forecaster at MeteoGroup, the weather division of the Press Association, said people will find that it will get "noticeably colder".
She said the cold snap and risk of snow will be caused by cold air coming down from the Arctic, and the areas at risk of snow are Scotland, the east coast of England, west Wales, south west England and Northern Ireland.
Ms Vince said forecasters were not expecting the snow to cause any problems, describing it as a "light dusting of snow", adding: "It'll just make it nice and pretty."
She described next week's cold snap as "brief", and said temperatures are expected to return to what we are currently having towards the weekend.
