The official National Weather Service forecast for Missoula — 46.8721°N, 113.994°W, population 88,109, 1 miles from I-90.
| Missoula County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 34 | 44 | 51 | 60 | 68 | 80 | 78 | 67 | 52 | 38 | 31 | 53 |
| Avg low °F | 17 | 17 | 23 | 28 | 36 | 42 | 48 | 47 | 40 | 31 | 23 | 18 | 31 |
| Precip in | 3.3 | 3.0 | 2.6 | 2.4 | 2.7 | 2.7 | 0.9 | 1.1 | 1.5 | 2.5 | 3.2 | 3.5 | 29.4 |
1996–2025 normals for Missoula County — the climate division Missoula sits in. All-time county record high 96.6°F (2007-07-07); record low -32.6°F (2024-01-14). Source: NOAA / National Weather Service.