Fall forecast for Alberta shows milder temps but wet weather again this September and October
The Old Farmer's Almanac predicts warmer-than-average temperatures this fall across southern Alberta, but September and October will be wetter than normal following a soaked summer.
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Fall across Alberta will be milder than average but wetter than normal, according to the Old Farmer's Almanac's 2026 Canadian Edition, offering little relief from the soaked summer many residents have endured.
For southern Alberta, including Calgary and Edmonton, warmer-than-average weather is expected overall, with October bringing the biggest temperature departures from normal. The downside: both September and October should see above-normal precipitation — a continuation of the wet pattern that soaked June and brought rounds of thunderstorms through early July.
Alberta is not alone in facing a wet fall. Most of Canada is expected to experience above-average precipitation this autumn, with British Columbia as the notable exception. The Almanac bases its forecasts on three pillars: solar science, climatology, and meteorology, comparing signals from the sun's activity, long-term weather patterns, and atmospheric changes against a 30-year statistical average from 1991–2020.
The forecast means rain gear will remain essential for Albertans planning outdoor activities through the fall season.
