Environment Canada warns Windsor could see up to 10 cm of snow by Tuesday morning.
In a special weather statement issued Monday, the agency said snow will begin falling late in the afternoon and will move east into the Golden Horseshoe regions late Monday evening.
Latest indications suggest most regions could receive 5-10 cm of snow.
Environment Canada also said strong, gusty winds are also expected to produce local blowing snow.
Travellers should allow extra time due to accumulating snow and reduced visibility in falling and blowing snow.