The official National Weather Service forecast for Cheyenne — 41.14°N, 104.8203°W, population 79,250, 1 miles from I-25.
| Laramie County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 40 | 50 | 56 | 65 | 78 | 86 | 83 | 75 | 61 | 49 | 40 | 60 |
| Avg low °F | 16 | 16 | 23 | 28 | 38 | 47 | 54 | 52 | 44 | 32 | 23 | 17 | 32 |
| Precip in | 0.4 | 0.6 | 1.1 | 1.8 | 2.5 | 2.0 | 1.9 | 1.5 | 1.4 | 1.1 | 0.6 | 0.5 | 15.4 |
1996–2025 normals for Laramie County — the climate division Cheyenne sits in. All-time county record high 99.6°F (2026-07-27); record low -31.3°F (1963-01-12). Source: NOAA / National Weather Service.