Missoula Climate: Weather by Month and Best Time to Visit
Best months for Missoula: August, July, September.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 1°C | -8°C | 45 mm | 11 | – | – | 3.7 |
| February | 3°C | -7°C | 41 mm | 10 | – | – | 4.1 |
| March | 8°C | -3°C | 44 mm | 10 | – | – | 5.1 |
| April | 12°C | 0°C | 53 mm | 11 | – | – | 5.9 |
| May | 18°C | 4°C | 56 mm | 11 | – | – | 7.0 |
| June | 22°C | 8°C | 57 mm | 10 | – | – | 7.7 |
| July | 29°C | 12°C | 19 mm | 5 | – | – | 8.5 |
| August | 29°C | 11°C | 19 mm | 4 | – | – | 8.6 |
| September | 23°C | 6°C | 30 mm | 5 | – | – | 8.4 |
| October | 14°C | 1°C | 43 mm | 9 | – | – | 6.5 |
| November | 5°C | -4°C | 50 mm | 10 | – | – | 4.6 |
| December | 0°C | -9°C | 51 mm | 11 | – | – | 3.7 |