Missoula, MT Weather
Missoula hourly forecast: next 24 hours
Today's high of 90°F (32°C) is about 5°F (3°C) above the typical August high of 85°F (29°C).
Current conditions in detail
Missoula weather tomorrow (Friday, August 7)
Tomorrow in Missoula looks sunny, with a high of 96° and an overnight low of 49°. Rain is unlikely (0% chance). Winds top out near 12 mph, and the UV index reaches 7 (high).
Missoula 14-day forecast
About the weather in Missoula
Missoula has a semi-arid climate, marked by big day-to-night temperature swings and modest rainfall. Average daytime highs range from about 35°F (2°C) in January to around 86°F (30°C) in July, and the city records roughly 104 days of measurable precipitation a year.
Missoula weather: quick facts
- Hottest month: July - highs near 86°F (30°C)
- Coldest month: January - highs near 35°F (2°C)
- Record high: 103°F (40°C) · Record low: -35°F (-37°C) (2015–2024)
- Wettest month: May (10 rainy days) · Sunniest: July (14.2 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
- Snow: about 34 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 86°F (30°C) and overnight lows stay near 59°F (15°C). The coolest month is January, with typical highs of 35°F (2°C) and lows around 19°F (-7°C). Based on 2015–2024 weather data, temperatures have reached as high as 103°F (40°C) and dropped as low as -35°F (-37°C).
Rain, sun and snow
May is usually the wettest month. It brings about 2.2 inches (56 mm) of rain over 10 days, while July is the driest. July brings the most sunshine, averaging 14.2 hours of sun a day. Snow falls on about 34 days in a typical year, mostly from October through April.
Season by season
Spring (March through May)
Spring in Missoula is mild, with daytime highs averaging 56°F (14°C) and nights around 35°F (2°C); expect showers on roughly 30 days across the season, plus around 7 snowy days.
Summer (June through August)
Summer in Missoula is hot, with daytime highs averaging 82°F (28°C) and nights around 56°F (13°C); rain falls on about 14 days over the three months.
Fall (September through November)
Fall in Missoula stays on the cool side of mild, with daytime highs averaging 58°F (15°C) and nights around 38°F (3°C); expect showers on roughly 26 days across the season, plus around 6 snowy days.
Winter (December through February)
Winter in Missoula brings deep cold, with daytime highs averaging 36°F (2°C) and nights around 20°F (-7°C); expect showers on roughly 34 days across the season, plus around 22 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Average temperatures in Missoula by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 35° | 19° | 10 | 1.5 in | 5.7 h/day | 72% |
| February | 37° | 20° | 12 | 2.0 in | 6.5 h/day | 68% |
| March | 47° | 28° | 10 | 1.6 in | 8.9 h/day | 62% |
| April | 56° | 34° | 10 | 1.8 in | 10.3 h/day | 57% |
| May | 66° | 43° | 10 | 2.2 in | 11.8 h/day | 58% |
| June | 75° | 51° | 8 | 1.8 in | 12.9 h/day | 53% |
| July | 86° | 59° | 2 | 0.5 in | 14.2 h/day | 39% |
| August | 85° | 58° | 3 | 0.7 in | 12.5 h/day | 41% |
| September | 73° | 48° | 6 | 1.5 in | 10.3 h/day | 53% |
| October | 58° | 37° | 10 | 2.0 in | 8.1 h/day | 63% |
| November | 44° | 28° | 10 | 1.8 in | 6.2 h/day | 67% |
| December | 36° | 22° | 12 | 2.0 in | 4.9 h/day | 70% |