Racine, Ohio has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6 °C (low) to 18.6 °C (high). Annual precipitation averages 1111.5 Millimeters. Racine is located in USDA Plant Hardiness Zone 6b. 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 | -5.3 °C | 4.9 °C | 81.03 mm |
| February | -4.3 °C | 7 °C | 77.98 mm |
| March | -0.7 °C | 12.2 °C | 99.82 mm |
| April | 4.8 °C | 19.8 °C | 95 mm |
| May | 10.7 °C | 24.3 °C | 112.52 mm |
| June | 15.5 °C | 28.3 °C | 110.74 mm |
| July | 17.6 °C | 30.1 °C | 116.08 mm |
| August | 16.8 °C | 29.7 °C | 87.88 mm |
| September | 12.7 °C | 26.3 °C | 88.9 mm |
| October | 5.8 °C | 20.2 °C | 76.71 mm |
| November | 0.6 °C | 13.3 °C | 73.66 mm |
| December | -2.7 °C | 7.3 °C | 91.19 mm |
| Annual | 6 °C | 18.6 °C | 1111.51 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |