Missoula (MT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Missoula.
Climate overview of Missoula
The climate in Missoula, Montana, United States of America, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in July to 0°C (32°F) in December.
The city tends toward dry conditions, with around 424 mm (17 in) of rain/snowfall per year. It does, however, have two distinct dry seasons, December to April and July to October, with warm summers and very cold winters.
Missoula Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Missoula - and find the best time to visit.
Monthly Temperature in Missoula
In Missoula, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 30°C (86°F) in July to a very cold 0°C (32°F) in the coolest month, December.
Nights vary from 11°C (52°F) in July to around -8°C (18°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Missoula
Missoula tends toward drier weather patterns, receiving approximately 424 mm (17 in) of rain/snow per year. The climate in Missoula shows significant variation throughout the year. Expect moderate rainfall in June, the wettest month, with an average of 58 mm (2.3 in) of precipitation over 13 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 21 mm (0.8 in) of rainfall over 6 rainy days. For more details, please visit our Missoula Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Missoula
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, August and September
- Warmest weather: July and August
- Fewest rainy days: July, August and September
- Seasonal pattern: Two distinct dry seasons, December to April and July to October, with warm summers and very cold winters
- Coldest conditions: December, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Missoula
What is the best time to visit Missoula?
June, August and September typically offer the most optimal weather in Missoula. In contrast, January, February, March, November and December tend to have less optimal conditions. Missoula has two distinct dry seasons, December to April and July to October, with warm summers and very cold winters.
What temperatures can I expect in Missoula?
Daytime highs range from 0°C (32°F) in December to 30°C (86°F) in July. Nighttime lows range from -8°C (18°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Missoula get?
Annual rainfall is around 424 mm (17 in). June is the wettest month with 58 mm (2.3 in), while July is the driest with 21 mm (0.8 in).
Missoula 3-Day Forecast
Missoula (MT) 3-Day Forecast
Missoula on the map
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