The official National Weather Service forecast for Moorcroft — 44.2633°N, 104.9502°W, 1.3 miles from I-90.
| Crook County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 36 | 47 | 55 | 65 | 77 | 86 | 84 | 75 | 59 | 46 | 35 | 58 |
| Avg low °F | 12 | 12 | 21 | 29 | 39 | 49 | 56 | 53 | 44 | 32 | 21 | 12 | 32 |
| Precip in | 0.6 | 0.7 | 1.0 | 1.9 | 3.2 | 2.7 | 2.1 | 1.6 | 1.3 | 1.6 | 0.6 | 0.6 | 17.9 |
1996–2025 normals for Crook County — the climate division Moorcroft sits in. All-time county record high 105.2°F (2006-07-29); record low -38.6°F (2024-01-14). Source: NOAA / National Weather Service.