Winter 2024 Forecast Ontario Weather. October could very well deliver some winter weather, but we do not expect that cold weather will lock in until later in november or december. Ontario braces for a winter season marked by nuanced fluctuations, promising a blend of mild initiation, potential wintry.

The forecast also includes several winter weather advisories: Ontario’s winter will be filled with a whirlwind of both snow and rain while the best chances of a white winter being in the prairies.