The official National Weather Service forecast for Fort Ashby — 39.5031°N, 78.7686°W, 9.7 miles from I-68.
| Mineral County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 54 | 66 | 75 | 82 | 86 | 85 | 78 | 67 | 55 | 44 | 65 |
| Avg low °F | 22 | 24 | 30 | 39 | 49 | 57 | 61 | 60 | 53 | 42 | 32 | 26 | 41 |
| Precip in | 2.5 | 2.3 | 3.0 | 3.4 | 4.6 | 4.2 | 3.5 | 3.4 | 3.7 | 3.0 | 2.2 | 2.6 | 38.4 |
1996–2025 normals for Mineral County — the climate division Fort Ashby sits in. All-time county record high 102.4°F (1988-07-17); record low -16.3°F (1994-01-19). Source: NOAA / National Weather Service.