The official National Weather Service forecast for Beaver — 38.2769°N, 112.6411°W, 5.5 miles from I-15. Forecasts here are written by NWS SLC, this county’s forecast office.
| Beaver County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 45 | 53 | 60 | 71 | 83 | 89 | 86 | 78 | 64 | 52 | 42 | 64 |
| Avg low °F | 19 | 21 | 27 | 32 | 40 | 50 | 58 | 56 | 47 | 36 | 26 | 18 | 36 |
| Precip in | 0.9 | 1.1 | 1.3 | 1.1 | 0.9 | 0.5 | 1.1 | 1.2 | 1.0 | 1.3 | 0.9 | 1.1 | 12.4 |
1996–2025 normals for Beaver County — the climate division Beaver sits in. All-time county record high 101.9°F (2002-07-14); record low -19.4°F (1990-12-23). Source: NOAA / National Weather Service.