Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Civic Maple Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Fall weather in Canada brings cooling temperatures, colourful foliage, and the first frosts. The season runs from September to November, with average highs dropping from the low 20s°C in September to near freezing by late November across most regions.
What defines fall weather in Canada?
Fall weather in Canada is marked by a steady drop in temperature and shorter daylight hours. September often feels like a mild extension of summer, especially in southern areas. October brings crisp air and peak leaf colours. November signals the transition to winter, with snow possible in many regions. The live forecast above shows current conditions for Val-Meer, which reflects the typical cooling trend for this time of year.
How does fall weather change by month?
Fall weather by month follows a clear pattern. September: daytime highs range from 15°C to 25°C, with cool nights. October: highs drop to 5°C–15°C, and frost becomes common. November: highs often stay below 5°C, with snow in northern and prairie areas. For a detailed look at upcoming conditions, check our Weather 10 Days page.
What should you expect for fall weather today?
Fall weather today varies widely across Canada. Coastal areas like Vancouver see rain and mild temperatures. The Prairies experience sharp cold fronts. Central and Atlantic regions enjoy sunny days with cool evenings. For city-specific conditions, visit our Toronto Weather or Calgary Weather pages. The fall weather temperature range for most of Canada in October sits between 5°C and 15°C.
When does fall weather 2025 start in Canada?
The astronomical start of fall 2025 is September 22. Meteorological fall begins September 1. Most Canadians notice cooler weather and changing leaves by mid-September.
Is fall weather in Canada unpredictable?
Yes. Fall weather in Canada can shift from warm sunshine to frost or snow within days. This is due to competing air masses. Always check the live forecast above before planning outdoor activities.
What is the best month for fall weather in Canada?
September offers the most stable fall weather, with warm days and cool nights. October provides the best foliage but more rain and frost. November is cold and often snowy in many regions.