Sun Valley weather

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The weather guide for Sun Valley, Idaho shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Sun Valley?

The hottest time of year in Sun Valley is normally July. Expect maximum daytime temperatures to reach 26°C with no heat and humidity.

Which month has the most rain in Sun Valley?

In terms of rainfall, January is usually the wettest month in Sun Valley with 67mm on average. There are normally 13 days in January with some rain.

When is it sunniest in Sun Valley?

The sunniest time of year in Sun Valley is normally July with bright sunshine on average for 78% of daylight hours; that's 12 hours of sunshine per day.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Sun Valley weather with the USA

Below the Sun Valley weather chart shows average maximum daytime temperature for Sun Valley, Idaho, USA and the USA (Washington).

Maximum daytime temperature (°C)

Sun Valley, Idaho, USA
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's hot in Idaho right now?

Below are the temperatures expected today at popular destinations in Idaho. Select a destination to compare today's forecast with average weather conditions.

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