The official National Weather Service forecast for Rochester — 42.7414°N, 88.2243°W, 8.9 miles from I-43. Forecasts here are written by NWS MKX, this county’s forecast office.
| Racine County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 33 | 45 | 56 | 68 | 78 | 82 | 80 | 74 | 61 | 47 | 35 | 57 |
| Avg low °F | 15 | 17 | 27 | 36 | 46 | 56 | 62 | 60 | 53 | 42 | 31 | 21 | 39 |
| Precip in | 1.6 | 1.7 | 2.2 | 3.5 | 4.2 | 4.4 | 3.5 | 3.6 | 3.3 | 3.0 | 2.0 | 2.0 | 35.0 |
1996–2025 normals for Racine County — the climate division Rochester sits in. All-time county record high 102.6°F (1995-07-14); record low -26.4°F (1982-01-11). Source: NOAA / National Weather Service.