The official National Weather Service forecast for Brimfield — 41.1001°N, 81.3465°W, 1.2 miles from I-76.
| Portage 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 | 19 | 20 | 28 | 37 | 48 | 57 | 61 | 59 | 53 | 42 | 33 | 26 | 40 |
| Precip in | 2.9 | 2.5 | 3.1 | 3.8 | 4.0 | 4.4 | 4.1 | 3.7 | 3.7 | 3.5 | 2.7 | 3.0 | 41.4 |
1996–2025 normals for Portage County — the climate division Brimfield sits in. All-time county record high 98.9°F (1988-07-08); record low -24.3°F (1994-01-19). Source: NOAA / National Weather Service.