Sun Valley weather in September (Idaho, United States of America)
How does the September weather in Sun Valley compare to other months? This guide provides the necessary weather information for your travel plans.
Temperatures
During September, Sun Valley experiences perfect weather, with pleasant temperatures and low rainfall. September is a notable month of the summer season. During the daylight hours, temperatures often reach 21°C. After dark they usually decrease to around 4°C.
Precipitation
Sun Valley in September usually receives low rainfall, averaging around 29 mm for the month. The climate data from previous years indicates that there are typically about 7 days days of rain.If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Sun Valley. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized Sun Valley climate page with graphs.
Sun Valley, monthly averages in September
Min Temperature
4°C
Max Temperature
21°C
Chance of Rain
22%
Precipitation
29 mm
Rainy days
7 days
Where to go in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
For visitors traveling to Sun Valley, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Sun Valley.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
