The polar vortex is heading this way.
Here's the day-by-day snow forecast for the Leeds area:-
Snow showers becoming more widespread and heavier from the east overnight, and giving slight accumulations by daybreak. Very cold with a brisk and bitter easterly breeze. Minimum temperature -2 °C.
Further snow showers interspersed with some bright or sunny intervals. Very cold with a brisk and bitter feeling easterly breeze. Maximum temperature 3 °C.
Tuesday - Thursday
Bitterly cold and turning increasingly windy, with penetrating night frosts. Frequent, occasionally heavy snow showers giving significant accumulations for many, with drifting.