| 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. 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 | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53038 - Johnson Creek, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 13 | 24 | 36 | 47 | 57 | 62 | 59 | 50 | 39 | 28 | 15 | 36 |
| Avg Max Temp (°F) | 26 | 31 | 43 | 56 | 69 | 79 | 83 | 80 | 72 | 60 | 44 | 31 | 56 |
| Avg Precip (In.) | 1.35 | 1.22 | 2.16 | 3.29 | 3.25 | 4.03 | 4.15 | 4.38 | 3.57 | 2.49 | 2.39 | 1.67 | 33.96 |