| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 53c - Southeastern Wisconsin Savannah and Till Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54974 - Rosendale, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 13 | 24 | 35 | 46 | 55 | 60 | 58 | 50 | 40 | 28 | 15 | 36 |
| Avg Max Temp (°F) | 24 | 29 | 41 | 55 | 69 | 77 | 82 | 79 | 71 | 59 | 42 | 29 | 55 |
| Avg Precip (In.) | 1.17 | 1.07 | 2.02 | 2.92 | 3.11 | 3.81 | 3.91 | 4.13 | 3.46 | 2.34 | 2.18 | 1.41 | 31.52 |