As soon as September arrived in Ontario, it felt like someone flipped a switch to fall after a summer of record-breaking heat.
However, according to Environment and Climate Change Canada (ECCC), summer isn’t officially over just yet, and we could be treated to more warm weather that could extend well into fall.
The latest Ontario fall weather outlook suggests above-average temperatures from September through November, with a 40% chance of above-normal temperatures for us here in southern Ontario based on a report from September 1, 2025.
For Toronto specifically, the department is suggesting a 46% chance of above-normal temperatures for the upcoming three months.
ECCC’s findings are based on a seasonal prediction system which analyzes meteorological patterns over one to three-month periods.
If this outlook holds, Ontario residents could be in for an extended taste of summer before sweater weather officially sets in. Soak it up, Toronto, because it the Farmers Almanac predictions for winter are correct, we’re in for a cold and blustery season.
To view the in-depth forecast, visit the ECCC’s website and interactive map here.