Ontario Winter Forecast 2024 2024. Find out what meteorologists, beavers and caterpillars are saying about the coming winter, and what it means for your sledding season. Winter temperatures will be coldest from.

With just four months to go until the official start of winter, ontario may want to enjoy the warm weather while it lasts, ahead of what might be a very unpleasant chilly season. 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.