'This year's May Bank Holiday could be the coldest for 41 years as temperatures are expected to drop as low as -6C.
Snow and frost which is expected to creep in from Friday could put a halt to the 13 million drivers who are expected to hit the roads over the weekend.
The Met Office has warned of snow and sleet flurries on the high ground in the Midlands, northern parts of the UK and even some areas of the south across Friday and Saturday.
The unpredictable weather conditions could spur on a 'motoring mayday', as research from the RAC reveals that this weekend will be the busiest on the roads in three years.
Friday is expected to be busiest for those embarking on car journeys, with 1.5 million more users hitting the roads than the same day last year.
This is while on a weather front -5C is due Friday night and -6C threatens Saturday with Sunday night into Monday almost as cold. Even the South is due -4C.
Widespread freezing temperatures and frost are due, with daytime showers.
The coldest early May Bank Holiday temperature recorded since the holiday began in 1978 is -5.9C on May 7, 2012, at Kinbrace, Sutherland, Scotland, Met Office records show.'
Read more: Wrap up warm! May Bank Holiday will be coldest for 41 years with minus 6C chills, frost and snow and sleet on way as 13million are set to hit the roads