Alberta fall weather expected to be warmer and wetter than average this year
The Old Farmer's Almanac predicts milder temperatures across the Prairies but above-normal rainfall in September and October, following a wet summer.
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After a wet start to summer, Alberta residents shouldn't expect a dry fall either. The Old Farmer's Almanac has released its 2026 Canadian Edition fall forecast, predicting milder temperatures across much of the Prairies but wetter-than-normal conditions.
For the southern Prairies, including Calgary and Edmonton, warmer-than-average weather is expected, with October showing the biggest temperature departures from normal. However, both September and October should be wetter than average — news many Albertans aren't eager to hear following a drenched June and multiple rounds of soaking thunderstorms in July.
Across Canada as a whole, it's shaping up to be a milder fall overall. Warmer-than-average temperatures are forecast for much of the country, while cooler weather settles into central and northern Canada and southwestern British Columbia. Most of Canada is expected to experience above-average precipitation this fall, with British Columbia as the notable exception.
The Almanac's long-range forecasts rely on three pillars: solar science, climatology, and meteorology. By tracking the sun's activity, studying long-term weather patterns, and monitoring atmospheric changes, the forecasters piece together signals about each season's trajectory. Those signals are then compared to a 30-year statistical average from government meteorological agencies, using the current benchmark of 1991–2020.
The facts
What does the Old Farmer's Almanac predict for Alberta fall temperatures?
The Old Farmer's Almanac predicts warmer-than-average temperatures across Alberta's southern Prairies, including Calgary and Edmonton, with October showing the biggest temperature departures from normal.
What precipitation does the forecast expect for Alberta in September and October?
Both September and October are expected to be wetter than average in Alberta, according to The Old Farmer's Almanac's 2026 Canadian Edition fall forecast.
How does the Old Farmer's Almanac make its long-range forecasts?
The Almanac's long-range forecasts rely on three pillars: solar science, climatology, and meteorology. Forecasters track the sun's activity, study long-term weather patterns, and monitor atmospheric changes, then compare those signals to a 30-year statistical average from government meteorological agencies using the 1991–2020 benchmark.
