The official National Weather Service forecast for Westover — 39.6345°N, 79.9698°W, 1.1 miles from I-79.
| Monongalia County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 43 | 52 | 64 | 73 | 80 | 83 | 82 | 77 | 65 | 53 | 43 | 63 |
| Avg low °F | 22 | 24 | 31 | 40 | 49 | 57 | 62 | 61 | 54 | 43 | 33 | 27 | 42 |
| Precip in | 3.7 | 3.2 | 3.6 | 4.0 | 4.8 | 4.7 | 5.1 | 4.0 | 3.6 | 3.4 | 3.0 | 3.6 | 46.7 |
1996–2025 normals for Monongalia County — the climate division Westover sits in. All-time county record high 98.8°F (1988-07-17); record low -21.9°F (1994-01-19). Source: NOAA / National Weather Service.