The official National Weather Service forecast for Milan — 41.2976°N, 82.6055°W, 1.8 miles from I-90.
| Erie County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 37 | 46 | 58 | 69 | 79 | 83 | 81 | 75 | 63 | 50 | 39 | 60 |
| Avg low °F | 21 | 23 | 30 | 40 | 51 | 61 | 65 | 63 | 57 | 46 | 35 | 27 | 43 |
| Precip in | 2.4 | 2.1 | 2.7 | 3.7 | 3.8 | 4.0 | 3.8 | 3.5 | 3.3 | 3.1 | 2.5 | 2.5 | 37.4 |
1996–2025 normals for Erie County — the climate division Milan sits in. All-time county record high 99.9°F (1952-06-26); record low -19.0°F (1994-01-19). Source: NOAA / National Weather Service.