ClimateForecastSeptemberOctober >>

Boise weather in September (Idaho, United States of America)

How does the weather in Boise usually fare in September? Want to know if it's a good time to visit? This page has all the weather details for the month.

Temperatures

Expect perfect weather in Boise during September, which means high temperatures and low rainfall. The temperature during the day can rise to approximately 27°C. At night, it falls to around 10°C.

Precipitation

Boise in September usually receives low rainfall, averaging around 13 mm for the month. Historically, approximately 5 days this month are expected to have rain.

Average sunshine

Expect sunny days throughout the month, with an estimated 303 hours of sunshine. Making it a pleasant time to visit Boise.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. May, June, August, September and October generally stand out with the best circumstances. While January, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Boise climate page with graphs.

 

Boise, monthly averages in September

Min TemperatureMin Temperature 10°C  
Max TemperatureMax Temperature 27°C  
Chance of RainChance of Rain 16%  
PrecipitationPrecipitation 13 mm  
Rainy daysRainy days 5 days  
HumidityHumidity 45%  
SunshineSunshine 303 hours  
Percentage SunshinePercentage Sunshine 81%  

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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
5/10
Outdoor sports
8/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Boise.

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.