The official National Weather Service forecast for Seymour — 44.515°N, 88.3304°W, 12.3 miles from I-41. Forecasts here are written by NWS GRB, this county’s forecast office.
| Outagamie County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 42 | 55 | 67 | 77 | 82 | 79 | 73 | 59 | 44 | 31 | 55 |
| Avg low °F | 11 | 12 | 23 | 34 | 45 | 55 | 59 | 58 | 50 | 39 | 28 | 17 | 36 |
| Precip in | 1.3 | 1.2 | 2.1 | 3.1 | 3.8 | 4.8 | 3.8 | 3.6 | 3.3 | 2.8 | 1.9 | 1.7 | 33.4 |
1996–2025 normals for Outagamie County — the climate division Seymour sits in. All-time county record high 100.3°F (1995-07-15); record low -32.6°F (1982-01-17). Source: NOAA / National Weather Service.