| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 54e - Chiwaukee Prairie Region | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53403 - Racine, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 18 | 28 | 37 | 47 | 57 | 64 | 64 | 56 | 44 | 32 | 20 | 40 |
| Avg Max Temp (°F) | 28 | 32 | 41 | 51 | 62 | 73 | 78 | 77 | 70 | 59 | 45 | 33 | 54 |
| Avg Precip (In.) | 1.7 | 1.43 | 2.39 | 3.97 | 3.25 | 3.7 | 3.62 | 4.09 | 3.62 | 2.49 | 2.83 | 2.06 | 35.15 |