Missoula Climate by Month
Missoula, Montana, United States
Hot summers and freezing winters, with little rain.
The climate in Missoula is one of hot summers and freezing winters, with little rain. August is the warmest month, with highs around 86°F (30°C); December is the coolest at 33°F (1°C), and nights dip to 19°F (-7°C). It gets only 14 in (344 mm) of rain a year.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 14 in(344 mm)
- No clear rainy season
- Humidity
- 58%
- Sunniest: July
Best and worst months in Missoula
Best for weatherJune and September are the best time for weather in Missoula: highs near 74°F (24°C) and about 1.3 in (34 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 33°F (1°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Missoula weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 34°F(1°C) | 19°F(-7°C) | 1.2 in(31 mm) | 82% | 1.3 |
| FebFebruary | 39°F(4°C) | 20°F(-7°C) | 0.9 in(24 mm) | 74% | 2.2 |
| MarMarch | 49°F(9°C) | 26°F(-3°C) | 1.0 in(26 mm) | 52% | 3.6 |
| AprApril | 58°F(14°C) | 31°F(0°C) | 1.2 in(30 mm) | 50% | 4.6 |
| MayMay | 67°F(20°C) | 39°F(4°C) | 1.7 in(42 mm) | 51% | 5.8 |
| JunJuneBest | 74°F(24°C) | 46°F(8°C) | 1.9 in(47 mm) | 51% | 6.2 |
| JulJuly | 86°F(30°C) | 51°F(10°C) | 0.7 in(17 mm) | 43% | 7.1 |
| AugAugust | 86°F(30°C) | 48°F(9°C) | 0.7 in(17 mm) | 39% | 6.1 |
| SepSeptemberBest | 74°F(24°C) | 41°F(5°C) | 0.8 in(21 mm) | 49% | 4.3 |
| OctOctober | 58°F(15°C) | 32°F(0°C) | 1.1 in(29 mm) | 59% | 2.5 |
| NovNovember | 43°F(6°C) | 26°F(-3°C) | 1.1 in(28 mm) | 60% | 1.4 |
| DecDecember | 33°F(1°C) | 19°F(-7°C) | 1.3 in(32 mm) | 82% | 1.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Missoula →- 🇺🇸RexburgIdaho, United States · Pop. 28k91%matchSame summer highsSimilar rainfallMissoula vs Rexburg →
- 🇺🇸Idaho FallsIdaho, United States · Pop. 59k91%matchSame humiditySimilar rainfallMissoula vs Idaho Falls →
- 🇺🇸HelenaMontana, United States · Pop. 32k89%matchSame summer highsSame sunshineMissoula vs Helena →
- 🇺🇸PocatelloIdaho, United States · Pop. 54k88%matchSame winter lowsSame humidityMissoula vs Pocatello →
- 🇺🇸BozemanMontana, United States · Pop. 43k86%matchSame summer highsSame sunshineMissoula vs Bozeman →