And the cold conditions are set to continue with a miserable mix of snow, rain and gale force winds expected this week as waves of wintry low pressure are blown across the country.
Parts of Britain are set to be soaked by bands of persistent rain during Monday night and early Tuesday morning.
The cold conditions show no sign of stopping
By dawn the heavy rain will be widespread for north-west England, Wales and the West Midlands.
Downpours could be wintry in Scotland with snow forecast over 800m and a mixture of sleet, snow and rain forecast at lower levels.
Rowers brave the cold out on the River Cam in Cambridge this morning
Strong winds will follow the downpours on Wednesday with gale force gusts of up to 50 mph predicted to batter exposed coastal areas in the north.
Brighter spells will follow in the north and west for a short while during the day before the next bout of wind and rain arrives when a deep area of low pressure passes to the north of Britain.
Much of the UK saw some frost this morning
A spokesman for The Weather Channel said : "A band of cloud and persistent rain will spread eastwards on Monday night with some more moderate falls expected over Scotland and Northern Ireland.
"By dawn the rain will be widespread for Wales and north-west England, edging into the West Midlands."
The UK is bracing for icy winds this week
He added: "It will be cloudy elsewhere although East Anglia will have clearer skies initially.
"A deep area of low pressure will pass to the north of Scotland on Wednesday resulting in strong and blustery west or south-westerly winds, gale force for exposed coastal areas and headlands,
"Gusts of 50mph for northern coastal areas are possible. Low pressure will bring further bands of cloud and rain through the week but with some drier interludes at times."