Monday's temperatures are expected to be up to 11C lower than during the sunshine of the Easter weekend as cold northern winds move over the country.
Temperatures are expected to plummet to -7C (19.4F) in some parts of the United Kingdom overnight as Arctic winds bring an end to the good weather.
Met Office forecaster Simon Partridge said the south of England can expect to see temperatures of 16C (60.8F) or 17C (62.6F) on Easter Sunday, with a high of 18C possible.
Talking about the pleasant weather on Easter Sunday, Mr Partridge joked: "You'll have to make sure your eggs don't melt if you're hiding them in the garden because it will be quite warm".
"A lot of the United Kingdom will be prone to seeing some wintry showers as we go through the course of Monday but northern Scotland is where we'll see the heaviest and most frequent snow".
"That will introduce much, much colder air across the whole country".
Daffodils in the snow at Muir of Ord in the Scottish Highlands Credit PETER JOLLY
Sub-zero temperatures can be expected in parts of northern England, while the mercury could drop to -7C in some areas of Scotland.
The Met Office has issued three snow and wind warnings - in what is predicted to be a three-day cold snap bringing "heavy snow showers".
Coastal areas of eastern England, parts of Wales and Northern Ireland could also see snow showers on Easter Monday.
'The snow showers will predominantly affect the north and west of the UK.
The air, which is blowing down directly from the Arctic is cold enough to bring snow with it, with flurries even affecting southern and central England this morning and whiteout conditions for parts of Scotland.
The Met Office's yellow warnings are in place from 4pm on Sunday until 10am on Tuesday for Scotland, with winds of up to 70mph forecast.
Average temperatures for this time of year are around 10 to 12C but parts of the United Kingdom saw the mercury reach almost 24C (75.2F) on Wednesday.