The official National Weather Service forecast for Congress — 40.9259°N, 82.0529°W, 3.9 miles from I-71.
| Wayne County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 38 | 48 | 61 | 71 | 80 | 83 | 82 | 76 | 63 | 50 | 40 | 60 |
| Avg low °F | 20 | 21 | 29 | 38 | 49 | 58 | 61 | 60 | 53 | 42 | 33 | 25 | 41 |
| Precip in | 2.6 | 2.4 | 3.1 | 3.7 | 4.3 | 4.6 | 4.1 | 3.7 | 3.4 | 3.2 | 2.5 | 2.8 | 40.4 |
1996–2025 normals for Wayne County — the climate division Congress sits in. All-time county record high 100.3°F (1988-07-08); record low -25.3°F (1994-01-19). Source: NOAA / National Weather Service.