The official National Weather Service forecast for Washington Court House — 39.5365°N, 83.4391°W, population 15,029, 11.6 miles from I-71.
| Fayette County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 41 | 52 | 64 | 73 | 81 | 84 | 83 | 78 | 66 | 53 | 42 | 63 |
| Avg low °F | 21 | 24 | 32 | 41 | 51 | 60 | 63 | 61 | 54 | 44 | 33 | 27 | 43 |
| Precip in | 3.0 | 2.8 | 3.7 | 4.2 | 4.5 | 4.7 | 4.2 | 3.1 | 3.1 | 2.9 | 2.9 | 3.2 | 42.3 |
1996–2025 normals for Fayette County — the climate division Washington Court House sits in. All-time county record high 101.2°F (1988-06-26); record low -24.8°F (1994-01-19). Source: NOAA / National Weather Service.