ClimateForecastNovemberDecember >>

Sun Valley (ID) Climate by Month

Sun Valley experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It maintains fairly dry conditions year-round. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

The climate in Sun Valley is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 27°C in July to a very cold -0°C in January. Nighttime temperatures can drop, with averages reaching -12°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Sun Valley has a relatively dry climate with low precipitation, averaging 451 mm of rain/snowfall annually. The seasons in Sun Valley, bring significant changes in precipitation. The wettest month, December, receives moderate snowfall, with an average of 80 mm of precipitation. This snowfall is distributed across 15 snowy days. In contrast, the driest month, July, experiences much less rainfall, totaling 11 mm over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Sun Valley in the United States of America

During the months of June, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Sun Valley have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Sun Valley?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Sun Valley?
    The coldest month is January with an average maximum temperature of -0°C.
  • Which is the wettest month in Sun Valley?
    December tops the wettest month list with 80 mm of rainfall.
  • Which is the driest month in Sun Valley?
    July is the driest month with 11 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Sun Valley (ID)

    Fri   Nov 22
    9°C | 0°C
    S 7 km/h
    12 mm
    broken clouds and sleet

    broken clouds and sleet

    Sat   Nov 23
    7°C | -1°C
    S 14 km/h
    30 mm
    overcast and heavy sleet

    overcast and heavy sleet

    Sun   Nov 24
    5°C | -10°C
    N 7 km/h
    clear and no rain

    clear and no rain