Flakes could fall in parts of the UK this weekend as temperatures look set to tumble in December.
Weather maps from WXCharts shows snow arriving in Wales, the Scottish Highlands and parts of the Pennines on Sunday morning.
Other areas in south of England will also experience heavy rain.
After 48 hours of isolated showers, a further round of heavier snowfall is forecast to come on Tuesday night, primarily affecting southwest England and the south of Wales.
The wintry outlook comes as the Met Office suggested a chilly few weeks could be ahead in their latest long-range forecast, which reads: "Confidence remains low for this period. More settled conditions are expected, with the potential for higher pressure over the UK, leading to drier weather.
"Whilst temperatures may average out close to normal overall, colder conditions are possible at times, with a risk of overnight frost and fog higher than normal."
A number of independent forecasters have meanwhile touted a "high" likelihood of snow over the festive period, raising some hopes of rare widespread snow on Christmas Day.
Leading bookmaker Coral has cut their odds on a White Christmas this year to 4-5 (from 6-4), with spokesman John Hill saying: “With temperatures falling fast, we have slashed the odds on snow coming down on the big day next month."
The last widespread white Christmas in the UK was in 2010, an event described by the Met Office as "extremely unusual" as there was snow on the ground at 83% of weather stations.
UK weather:
Dry for many with overnight frost and fog.
Today:
Some patchy rain and drizzle moving slowly east across Northern Ireland and western Scotland. Mostly dry elsewhere with some sunny spells, but low cloud and some fog persisting across parts of England and Wales where it will feel cold.
Tonight:
Rain and drizzle moving east across Scotland and the far northwest of England. Clear spells elsewhere with a patchy frost, and also some fog patches; these mainly in the south.
Thursday:
Patchy rain in the north dying out. Mostly dry elsewhere with some sunny spells, but low cloud and some fog again persisting in the south where it will remain cold.
Outlook for Friday to Sunday:
Occasional rain in the far northwest on Friday and Saturday. Otherwise, morning fog slowly clearing on Friday, leaving a cold weekend with scattered showers and a brisk easterly breeze.
