Racine, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41 °F (low) to 55 °F (high). Annual precipitation averages 36.2 Inches. Racine is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.3 °F | 29.8 °F | 1.89 in. |
| February | 19.2 °F | 32.7 °F | 1.89 in. |
| March | 28.1 °F | 41.5 °F | 2.44 in. |
| April | 37.6 °F | 51.4 °F | 3.99 in. |
| May | 47.1 °F | 62.3 °F | 4.03 in. |
| June | 57.5 °F | 72.6 °F | 4.16 in. |
| July | 64.6 °F | 79.0 °F | 3.14 in. |
| August | 64.5 °F | 77.9 °F | 3.67 in. |
| September | 56.8 °F | 71.3 °F | 3.28 in. |
| October | 44.8 °F | 59.1 °F | 3.16 in. |
| November | 33.1 °F | 46.6 °F | 2.49 in. |
| December | 22.6 °F | 35.2 °F | 2.1 in. |
| Annual | 41 °F | 55 °F | 36.24 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |