The official National Weather Service forecast for Edon — 41.5564°N, 84.7689°W, 5.3 miles from I-90.
| Williams County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 36 | 47 | 60 | 71 | 80 | 84 | 82 | 76 | 63 | 49 | 37 | 60 |
| Avg low °F | 18 | 20 | 28 | 38 | 49 | 59 | 62 | 60 | 53 | 42 | 32 | 24 | 40 |
| Precip in | 2.3 | 2.2 | 2.6 | 3.3 | 4.4 | 3.9 | 3.7 | 3.6 | 3.0 | 2.8 | 2.6 | 2.5 | 36.9 |
1996–2025 normals for Williams County — the climate division Edon sits in. All-time county record high 104.2°F (2012-06-29); record low -20.9°F (1994-01-19). Source: NOAA / National Weather Service.