The official National Weather Service forecast for Alliance — 42.1016°N, 102.8722°W, population 8,119, 64.6 miles from I-80.
| Box Butte County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 40 | 50 | 58 | 68 | 80 | 88 | 86 | 77 | 62 | 50 | 39 | 61 |
| Avg low °F | 14 | 15 | 23 | 31 | 41 | 51 | 58 | 55 | 46 | 33 | 23 | 14 | 34 |
| Precip in | 0.3 | 0.5 | 0.9 | 1.9 | 3.4 | 2.6 | 2.5 | 1.8 | 1.5 | 1.1 | 0.4 | 0.4 | 17.3 |
1996–2025 normals for Box Butte County — the climate division Alliance sits in. All-time county record high 105.0°F (2006-07-16); record low -38.5°F (1989-12-22). Source: NOAA / National Weather Service.