'Raw ' polar air blowing from Russia and Scandinavia will see night time temperatures drop as low as 1C in the UK . The chilly weather is expected to last the hottest day of the year and could bring a dusting of snow to Derbyshire and Yorkshire . There is snow on the ground in South Wales , Huddersfield and Durham today after an overnight fall . Weekend temperatures are a stark contrast to last week , when mercury hit 17.5C on all weekend .
'Raw ' polar air blowing from Russia and Scandinavia will see night time temperatures drop as low as 1C in the UK . The chilly weather is expected to last all weekend and could bring a dusting of snow to Derbyshire and Yorkshire . There is snow on the ground in South Wales , Huddersfield and Durham today after an overnight fall . Weekend temperatures are a stark contrast to last week , when mercury hit 17.5C on the hottest day of the year .