Environment Canada has issued a freezing rain warning for Montreal, including the Châteauguay – La Prairie area, Laval, Longueuil and Varennes.
An intense low system, making its way through southern Ontario on Saturday, is expected to hit Quebec on Sunday and cause a mixed bag of precipitation.
Environment Canada says the weather system will bring snow and ice pellets that will change to freezing rain Sunday evening.
Around 5 millimetres of freezing rain is expected by Monday morning, which could complicate the morning rush hour.
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The agency is urging commuters to exercise caution as roads and walkways could become icy and slippery.
Environment Canada issues freezing rain warnings when rain falling in sub-zero temperatures leads to a ice build-up.
Warnings were issued for several regions of southern Quebec.