The official National Weather Service forecast for Neenah — 44.1858°N, 88.4626°W, 4 miles from I-41. Forecasts here are written by NWS GRB, this county’s forecast office.
| Winnebago County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 42 | 56 | 68 | 78 | 82 | 80 | 73 | 59 | 45 | 32 | 56 |
| Avg low °F | 11 | 13 | 24 | 34 | 46 | 56 | 60 | 59 | 51 | 39 | 28 | 17 | 36 |
| Precip in | 1.2 | 1.1 | 2.1 | 3.0 | 4.1 | 4.9 | 3.7 | 3.7 | 3.1 | 2.7 | 1.8 | 1.5 | 32.9 |
1996–2025 normals for Winnebago County — the climate division Neenah sits in. All-time county record high 102.0°F (1995-07-14); record low -31.5°F (1951-01-30). Source: NOAA / National Weather Service.