The official National Weather Service forecast for Jacksonville — 39.4751°N, 82.0818°W, 32.7 miles from I-70.
| Athens County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 39 | 44 | 54 | 66 | 74 | 81 | 84 | 84 | 78 | 67 | 55 | 44 | 64 |
| Avg low °F | 22 | 25 | 32 | 40 | 50 | 58 | 62 | 61 | 54 | 43 | 33 | 27 | 42 |
| Precip in | 3.2 | 3.1 | 3.8 | 4.0 | 4.4 | 4.5 | 4.4 | 3.4 | 3.5 | 3.1 | 2.8 | 3.2 | 43.4 |
1996–2025 normals for Athens County — the climate division Jacksonville sits in. All-time county record high 101.4°F (2012-07-08); record low -26.2°F (1994-01-20). Source: NOAA / National Weather Service.