People are being warned to take extra care outside, after a big shower of the snow on Christmas Day.
Lots of the White stuff fell in many parts of the UK, making it the first white Christmas for five years.
Edinburgh, Glasgow, Nottingham and Leeds were all covered in snow.
But now weather experts are warning that the ice and sleet could be really dangerous. Temperatures are expected to fall again next week, which could lead to more snow in parts of the UK.
The icy conditions have led to an increase in the number of road accidents and motorists in particular are being asked not to travel unless they really need to.