Best time to visit Sun Valley

Find the best time to visit Sun Valley and plan your perfect trip in 2024/2025. Get holiday inspiration, weather guides, travel advice and find great deals.

Sun Valley by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Sun Valley?

The best time to visit Sun Valley is July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°C)

  • -2°C maximum daytime temperature in January in Sun Valley-2
    Jan
  • 1°C maximum daytime temperature in February in Sun Valley1
    Feb
  • 4°C maximum daytime temperature in March in Sun Valley4
    Mar
  • 10°C maximum daytime temperature in April in Sun Valley10
    Apr
  • 16°C maximum daytime temperature in May in Sun Valley16
    May
  • 20°C maximum daytime temperature in June in Sun Valley20
    Jun
  • 26°C maximum daytime temperature in July in Sun Valley26
    Jul
  • 25°C maximum daytime temperature in August in Sun Valley25
    Aug
  • 20°C maximum daytime temperature in September in Sun Valley20
    Sep
  • 13°C maximum daytime temperature in October in Sun Valley13
    Oct
  • 4°C maximum daytime temperature in November in Sun Valley4
    Nov
  • -1°C maximum daytime temperature in December in Sun Valley-1
    Dec

Hours of Sunshine (daily)

Best time to visit

The weather guide for Idaho (Sun Valley) 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.

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

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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.

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