| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 53c - Southeastern Wisconsin Savannah and Till Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53563 - Milton, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 14 | 25 | 36 | 47 | 57 | 61 | 59 | 50 | 40 | 28 | 16 | 37 |
| Avg Max Temp (°F) | 26 | 32 | 44 | 57 | 70 | 80 | 83 | 81 | 73 | 61 | 45 | 32 | 57 |
| Avg Precip (In.) | 1.32 | 1.26 | 2.19 | 3.49 | 3.34 | 4.05 | 4 | 4.33 | 3.46 | 2.52 | 2.51 | 1.67 | 34.14 |