Sun Valley (ID) Weather and Climate: A Comprehensive Guide
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 maximum day and minimum 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 average lows reaching -12°C in January. Check out our detailed temperature page for more information.Temperature ranges by month
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. For more details, please visit our Sun Valley Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
partly cloudy and snow overcast and chance of sleet partly cloudy and small chance of rainForecast for Sun Valley (ID)
2 m/s
1 m/s
2 m/s
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:
Yes, the months of July and August are very dry.
July has an average maximum temperature of 27°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -0°C.
December tops the wettest month list with 80 mm of rainfall.
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.
