Winter Forecast 2024 Ontario Toronto. 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. Get the monthly weather forecast for toronto, ontario, canada, including daily high/low, historical averages, to help you plan ahead.

November 2024 to october 2025. Blazing hot summer temperatures have already begun to wane in ontario, and the inner pessimist in all of us has already started to think about the cold, dreary winter looming just a few months.