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Boise weekend weather

This weekend in Boise, ID, 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 96° across the weekend. Agreement is medium — plausible, but worth re-checking closer to the day.

Sat

2026-08-01 — every model, side by side
NWSNational Blend (NBM)
100°
Clear
High 100°·Low 71°·Rain 0%
AmericanNOAA GFS
107°
Cloudy
High 107°·Low 81°·Rain 0%
EuropeanECMWF
104°
Mostly clear
High 104°·Low 73°·Rain 0%

The models range from 100° to 107°. Treat the middle of that range as the likely outcome and keep a backup plan.

Sun

2026-08-02 — every model, side by side
NWSNational Blend (NBM)
87°
Clear
High 87°·Low 63°·Rain 0%
AmericanNOAA GFS
91°
Clear
High 91°·Low 66°·Rain 0%
EuropeanECMWF
90°
Clear
High 90°·Low 67°·Rain 0%

The models range from 87° to 91°. 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±3°97° to 100°models agree0% to 0% chance
Tomorrow±3°101° to 105°±2%0% to 2% chance
Sat±7°100° to 107°models agree0% to 0% chance
Sun±5°87° to 91°models agree0% to 0% chance
Mon±2°87° to 89°models agree0% to 0% 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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