| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 52b - Paleozoic Plateau/Coulee Section |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53560 - Mazomanie, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 11 | 22 | 34 | 45 | 55 | 59 | 57 | 48 | 37 | 25 | 13 | 34 |
| Avg Max Temp (°F) | 25 | 31 | 43 | 57 | 70 | 79 | 83 | 80 | 72 | 60 | 43 | 30 | 56 |
| Avg Precip (In.) | 1.16 | 1.15 | 2.14 | 3.31 | 3.37 | 4.16 | 4.14 | 4.35 | 3.37 | 2.33 | 2.32 | 1.43 | 33.24 |