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Guelph weekend weather

This weekend in Guelph, Ontario, 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 9° across the weekend. Agreement is medium - plausible, but worth re-checking closer to the day. Rain chance reaches 44% on at least one model.

Sat

2026-11-07 — every model, side by side
Env. CanadaGEM model
10°
Light rain
High 10°·Low 4°·Rain 33%
EuropeanECMWF
10°
Drizzle
High 10°·Low 7°·Rain 44%
AmericanNOAA GFS
7°
Cloudy
High 7°·Low -1°·Rain 34%

The models range from 7° to 10°. Treat the middle of that range as the likely outcome and keep a backup plan.

Sun

2026-11-08 — every model, side by side
Env. CanadaGEM model
9°
Light drizzle
High 9°·Low 1°·Rain 29%
EuropeanECMWF
11°
Light drizzle
High 11°·Low 4°·Rain 25%
AmericanNOAA GFS
9°
Cloudy
High 9°·Low -1°·Rain 13%

The models range from 9° to 11°. 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°20° to 21°±49%10% to 59% chance
Tomorrow±2°19° to 21°±8%88% to 96% chance
Thu±2°16° to 17°±5%91% to 96% chance
Fri±3°12° to 14°±28%24% to 52% chance
Sat±3°7° to 10°±11%33% to 44% 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?
At least one model puts the weekend rain chance as high as 44%. Weekend forecasts sit far enough ahead that models frequently disagree on showers - when they do, no single app can honestly tell you it will or will not rain.
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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