The Met Office has issued a yellow warning of snow and ice for North Yorkshire, West Yorkshire, the East Riding, South Yorkshire and North East Lincolnshire overnight, when up to 10cms of snow could fall over higher ground.
There remains some uncertainty over where the heaviest snowfalls will occur but motorists are being advised to expect delays on the Wednesday morning rush hour, particularly when using untreated roads.
The snow is arriving on a cold front that will move east and south across the region overnight, bringing with it significantly colder air with frequent showers.
Most areas can expect between one and four centimetres of snow but localised showers could be prolonged. Clear spells between showers will also lead to icy stretches forming on untreated surfaces.
Wife killer who stuffed body of new bride into suitcase to get life sentence for her murder
Key moment for Brighouse Deal as £19.1million plans submitted
Halifax man found guilty of murdering his wife concocted a "web of lies" say Crown Prosecution Service
Calderdale Council gives green light for millions of pounds to be invested into the borough
Stephen can't wait for the show to begin in Halifax
Cold northerly or easterly winds will continue to keep daytime temperatures below five degrees until the weekend, with overnight lows of -1 Celsius.