| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°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 |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53402 - Racine, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 18 | 27 | 37 | 47 | 57 | 63 | 63 | 55 | 43 | 31 | 19 | 40 |
| Avg Max Temp (°F) | 28 | 32 | 41 | 51 | 63 | 74 | 79 | 78 | 71 | 59 | 46 | 33 | 55 |
| Avg Precip (In.) | 1.69 | 1.44 | 2.39 | 3.91 | 3.22 | 3.7 | 3.64 | 4.1 | 3.54 | 2.48 | 2.79 | 2.06 | 34.97 |