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Mount Gambier weekend weather

This weekend in Mount Gambier, South Australia, 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 14° across the weekend. Agreement is medium — plausible, but worth re-checking closer to the day. Rain chance reaches 94% on at least one model.

Tomorrow

2026-08-01 — every model, side by side
EuropeanECMWF
13°
Cloudy
High 13°·Low ·Rain 0%
AmericanNOAA GFS
14°
Cloudy
High 14°·Low ·Rain 0%
GermanDWD ICON
12°
Fog
High 12°·Low ·Rain 0%

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

Sun

2026-08-02 — every model, side by side
EuropeanECMWF
13°
Drizzle
High 13°·Low ·Rain 94%
AmericanNOAA GFS
15°
Showers
High 15°·Low ·Rain 90%
GermanDWD ICON
13°
Showers
High 13°·Low ·Rain 75%

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°12° to 13°±10%0% to 10% chance
Tomorrow±2°12° to 14°models agree0% to 0% chance
Sun±2°13° to 15°±19%75% to 94% chance
Mon±1°12° to 13°±72%8% to 80% chance
Tue±2°11° to 13°±15%8% to 23% 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 94%. 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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