Temperatures are expected to plunge below -8C by the middle of the week, with a warning of heavy snow in Scotland, the Met Office has forecast.
Winds which are currently blowing from the east are expected to shift to the north bringing an Arctic chill to the country and below-average temperatures for the time of year.
A yellow snow warning is in place for Wednesday, which the Met Office is advising could cause disruption to road, bus and train journeys.
Alex Burkill, Met Office meteorologist, revealed the mercury will drop as the week goes on - with chillier temps expected "both by day and by night".
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