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Weather in Rock Forest tomorrow

Tomorrow's forecast for Rock Forest, Quebec from every major model, so you can see whether they agree before you plan around it.

Tomorrow

Tomorrow in this area the models centre on about 25°. Model agreement is low — treat any single number with suspicion. Rain chance runs as high as 51% on at least one model. The models agree closely on temperature but split badly on rain (39 points apart), so the rain call is the uncertain part.

Tomorrow

2026-07-31 — every model, side by side
Env. CanadaGEM model
27°
Cloudy
High 27°·Low 14°·Rain 24%
EuropeanECMWF
25°
Light drizzle
High 25°·Low 15°·Rain 51%
AmericanNOAA GFS
24°
Heavy rain
High 24°·Low 17°·Rain 12%

All 3 models land within 2° of each other for this day — that is a forecast you can plan on.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°24° to 25°±43%22% to 65% chance
Tomorrow±2°24° to 27°±39%12% to 51% chance
Sat±3°27° to 29°±26%24% to 50% chance
Sun±4°25° to 29°±1%81% to 82% chance
Mon±6°20° to 27°±8%71% to 79% 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 tomorrow?
At least one model puts the chance of rain as high as 51% tomorrow. When the models disagree on rain the shower is genuinely uncertain, which is exactly what a single blended percentage hides from you.
How accurate is a one-day forecast?
A one-day-ahead forecast is the most reliable one you will get — in our own testing, temperature error at 24 hours is well under half what it is at seven days. That is why tomorrow's forecast is worth trusting when the models agree, and worth questioning when they do not.

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