The official National Weather Service forecast for Valentine — 42.8728°N, 100.551°W, 122.4 miles from I-80.
| Cherry County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 36 | 39 | 50 | 59 | 69 | 81 | 88 | 86 | 78 | 63 | 50 | 38 | 61 |
| Avg low °F | 13 | 15 | 24 | 32 | 43 | 54 | 60 | 58 | 48 | 35 | 24 | 15 | 35 |
| Precip in | 0.5 | 0.6 | 1.1 | 2.4 | 3.7 | 3.7 | 2.7 | 2.3 | 1.9 | 1.5 | 0.6 | 0.6 | 21.6 |
1996–2025 normals for Cherry County — the climate division Valentine sits in. All-time county record high 107.9°F (2006-07-17); record low -29.9°F (1983-12-23). Source: NOAA / National Weather Service.