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Chestermere weekend weather

This weekend in Chestermere, Alberta, model by model. Weekend forecasts are far enough out that the models often split — so we show you where.

Weekend

The models centre on about 30° across the weekend. Agreement is medium — plausible, but worth re-checking closer to the day.

Sat

2026-08-01 — every model, side by side
Env. CanadaGEM model
34°
Mostly clear
High 34°·Low 12°·Rain 0%
EuropeanECMWF
34°
Partly cloudy
High 34°·Low 15°·Rain 0%
AmericanNOAA GFS
36°
Cloudy
High 36°·Low 12°·Rain 1%

The models range from 34° to 36°. Treat the middle of that range as the likely outcome and keep a backup plan.

Sun

2026-08-02 — every model, side by side
Env. CanadaGEM model
23°
Partly cloudy
High 23°·Low 14°·Rain 11%
EuropeanECMWF
23°
Partly cloudy
High 23°·Low 11°·Rain 17%
AmericanNOAA GFS
26°
Cloudy
High 26°·Low 10°·Rain 17%

The models range from 23° to 26°. Treat the middle of that range as the likely outcome and keep a backup plan.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°27° to 28°±1%0% to 1% chance
Tomorrow±1°30° to 31°±10%0% to 10% chance
Sat±2°34° to 36°±1%0% to 1% chance
Sun±2°23° to 26°±6%11% to 17% chance
Mon±2°19° to 21°±7%10% to 17% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Common questions

Will it rain this weekend?
The models are not currently showing a high weekend rain risk, and they broadly agree with each other.
How reliable is a weekend forecast?
It depends how far away the weekend is. Forecast error grows steadily with lead time, so a Saturday forecast made on Friday is far stronger than one made the previous Monday. The honest signal is model agreement: when they converge the forecast is solid, and when they spread the weekend is genuinely uncertain.

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