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Weather & Climate
Winnebago County, Wisconsin, United States
Overview
Available climate summaries for Winnebago County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
7.3°C
Summer Avg
20.7°C
Winter Avg
-7.1°C
Record High
37.8°C
Record Low
-40.9°C
Annual Precipitation
879.3 mm
Avg Humidity
80%
Summer Humidity
75%
Winter Humidity
89%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 8.5° | -8.7° | -40.9° | 32.6 | 90% | 51 | 62.7 |
| Feb | 17.4° | -7.4° | -30.6° | 34.4 | 88% | 76 | 65.6 |
| Mar | 25.6° | -0.1° | -28.7° | 53.9 | 80% | 118 | 66.7 |
| Apr | 26.4° | 6.5° | -12.4° | 87.6 | 76% | 139 | 63.7 |
| May | 32.9° | 13.1° | -3.1° | 107.3 | 76% | 173 | 54.5 |
| Jun | 34.8° | 19° | 2.9° | 121.2 | 77% | 182 | 47.1 |
| Jul | 37.8° | 22.1° | 7.5° | 88.7 | 74% | 194 | 38.5 |
| Aug | 36.3° | 21.1° | 5.7° | 95.5 | 74% | 163 | 39 |
| Sep | 33.1° | 16.8° | 0.2° | 84 | 76% | 123 | 53.4 |
| Oct | 29.2° | 8.9° | -6.8° | 78.4 | 78% | 82 | 61.1 |
| Nov | 22.1° | 1.9° | -16.1° | 49.2 | 82% | 51 | 56.4 |
| Dec | 16.9° | -5.2° | -30.2° | 46.5 | 89% | 38 | 58.3 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
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