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Kingston weekend weather

This weekend in Kingston, 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 17° across the weekend. Agreement is low - the weekend is genuinely up in the air at this range. Rain chance reaches 95% on at least one model.

Today

2026-09-19 — every model, side by side
Env. CanadaGEM model
18°
Mostly clear
High 18°·Low ·Rain 0%
EuropeanECMWF
16°
Cloudy
High 16°·Low 10°·Rain 0%
AmericanNOAA GFS
18°
Cloudy
High 18°·Low ·Rain 0%

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

Tomorrow

2026-09-20 — every model, side by side
Env. CanadaGEM model
18°
Light rain
High 18°·Low 11°·Rain 86%
EuropeanECMWF
17°
Drizzle
High 17°·Low 13°·Rain 95%
AmericanNOAA GFS
14°
Light rain
High 14°·Low ·Rain 76%

The models are 5° apart on this day. That is genuine uncertainty — any app showing you a single confident number is hiding it.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°16° to 18°models agree0% to 0% chance
Tomorrow±5°14° to 18°±19%76% to 95% chance
Monmodels agree15° to 15°models agree0% to 0% chance
Tue±2°15° to 16°models agree0% to 0% chance
Wed±3°17° to 20°±12%2% to 14% 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 95%. 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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