The official National Weather Service forecast for Anaconda — 46.1285°N, 112.9423°W, population 6,697, 6.9 miles from I-90.
| Deer Lodge County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 31 | 40 | 47 | 56 | 64 | 76 | 74 | 64 | 50 | 37 | 29 | 50 |
| Avg low °F | 14 | 13 | 19 | 24 | 32 | 39 | 45 | 44 | 37 | 28 | 19 | 13 | 27 |
| Precip in | 1.5 | 1.7 | 1.8 | 2.1 | 2.9 | 2.8 | 1.1 | 1.3 | 1.5 | 1.7 | 1.6 | 1.8 | 21.8 |
1996–2025 normals for Deer Lodge County — the climate division Anaconda sits in. All-time county record high 91.0°F (2002-07-13); record low -38.1°F (1989-02-04). Source: NOAA / National Weather Service.