The official National Weather Service forecast for Millersburg — 40.5545°N, 81.9179°W, 20.9 miles from I-77.
| Holmes County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 35 | 39 | 49 | 62 | 72 | 80 | 83 | 82 | 76 | 64 | 51 | 40 | 61 |
| Avg low °F | 20 | 21 | 29 | 39 | 49 | 58 | 61 | 60 | 53 | 42 | 32 | 25 | 41 |
| Precip in | 2.8 | 2.6 | 3.3 | 3.9 | 4.3 | 4.8 | 4.2 | 3.8 | 3.3 | 3.1 | 2.7 | 3.0 | 41.8 |
1996–2025 normals for Holmes County — the climate division Millersburg sits in. All-time county record high 100.2°F (1988-07-08); record low -26.4°F (1994-01-19). Source: NOAA / National Weather Service.