Similar conditions are expected on Saturday and Sunday with temperatures dipping below freezing overnight before warming up to highs of 11C by the afternoon.
However Easter Monday will see conditions worsen, with freezing temperatures across almost the entire country, dropping as low as -7C in Scotland.
Temperature charts by Netweather show the vast majority of the UK turn an icy blue by 9am on Monday morning, as freezing conditions move in.
Lows of -7C are forecast in Scotland, with temperatures expected to fall to -4C in parts of northern England.
Wales, the Midlands and Northern Ireland will see the mercury dip to -2C, while the south of England is expected to see temperatures dip just below freezing.
The chilly temperatures look set to coincide with snowfall across much of the UK, with snow risk charts showing much of the country is covered by significant risk.
The high snow risk moves in from Sunday evening, covering parts of northern Scotland, according to a chart by Netweather.
It moves much further south overnight, and by 6am almost all of the UK is covered by some form of snow risk.
BBC forecasters said the freezing conditions are due to a band of air moving in from Iceland.
They said: “The colder air mass behind the front will bring a stark difference from the warm, tropical air it replaces, with afternoon highs dropping as much as 10 Celsius is some places!
“This air will originate from nearer to Iceland instead of Morocco, so a fresher feel is in store throughout the country.”
The Met Office forecasts cold temperatures and snow showers over the coming days.
Deputy Chief Meteorologist, Mark Sidaway, said: “After a settled, warm spell with plenty of sunshine particularly across England and Wales our weather will take a notable change in direction later in the weekend.
“Very cold Arctic air will move in from the north west through Sunday, bringing snow showers and freezing overnight temperatures.
“The snow showers will predominantly affect the north and west of the UK. The south and east will likely remain drier but still cold with a lower chance of wintry showers.”
Netweather senior forecast Jo Farrow added: ” It will be cold Sunday night, Monday and Tuesday, feeling bitter in the wind with a hard frost, ice and wintry showers, including snow for some.
“Settling snow will be mostly for northern hills, particularly the far north of mainland Scotland (NW Highland and Grampians), even to lower levels and also northern counties of Northern Ireland.”