The official National Weather Service forecast for Dunbar — 38.3606°N, 81.7374°W, 0.1 miles from I-64.
| Kanawha County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 43 | 48 | 57 | 69 | 76 | 83 | 86 | 85 | 80 | 69 | 57 | 47 | 67 |
| Avg low °F | 25 | 28 | 34 | 43 | 52 | 60 | 64 | 63 | 57 | 45 | 34 | 29 | 44 |
| Precip in | 3.3 | 3.5 | 3.7 | 4.0 | 5.0 | 4.6 | 5.5 | 3.9 | 3.3 | 3.2 | 3.0 | 3.5 | 46.5 |
1996–2025 normals for Kanawha County — the climate division Dunbar sits in. All-time county record high 101.5°F (1988-07-17); record low -18.9°F (1994-01-19). Source: NOAA / National Weather Service.