The official National Weather Service forecast for De Pere — 44.4489°N, 88.0604°W, 1.6 miles from I-41. Forecasts here are written by NWS GRB, this county’s forecast office.
| Brown County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 41 | 53 | 65 | 75 | 80 | 78 | 72 | 58 | 44 | 32 | 54 |
| Avg low °F | 12 | 13 | 23 | 34 | 44 | 55 | 59 | 58 | 51 | 40 | 29 | 18 | 36 |
| Precip in | 1.5 | 1.3 | 2.2 | 3.0 | 3.7 | 4.4 | 3.6 | 3.6 | 3.0 | 2.9 | 1.9 | 1.8 | 32.9 |
1996–2025 normals for Brown County — the climate division De Pere sits in. All-time county record high 98.3°F (1995-07-15); record low -30.4°F (1982-01-17). Source: NOAA / National Weather Service.