The official National Weather Service forecast for Brunswick — 41.2381°N, 81.8418°W, 3.2 miles from I-71.
| Medina County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 38 | 48 | 60 | 71 | 79 | 83 | 81 | 75 | 63 | 50 | 39 | 60 |
| Avg low °F | 20 | 21 | 29 | 39 | 49 | 59 | 62 | 60 | 54 | 44 | 34 | 26 | 41 |
| Precip in | 2.5 | 2.2 | 2.9 | 3.5 | 4.1 | 4.3 | 3.9 | 3.7 | 3.5 | 3.4 | 2.6 | 2.8 | 39.4 |
1996–2025 normals for Medina County — the climate division Brunswick sits in. All-time county record high 99.7°F (1988-07-08); record low -23.5°F (1994-01-19). Source: NOAA / National Weather Service.