Genoa, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38 °F (low) to 56.7 °F (high). Annual precipitation averages 37.9 Inches. Genoa is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 26.2 °F | 1.24 in. |
| February | 13.4 °F | 30.9 °F | 1.12 in. |
| March | 24.8 °F | 43.1 °F | 2.02 in. |
| April | 37.0 °F | 57.4 °F | 3.88 in. |
| May | 48.7 °F | 69.7 °F | 4.83 in. |
| June | 59.0 °F | 79.1 °F | 5.89 in. |
| July | 63.0 °F | 82.7 °F | 4.26 in. |
| August | 60.9 °F | 80.7 °F | 4.65 in. |
| September | 52.7 °F | 73.6 °F | 3.97 in. |
| October | 40.6 °F | 60.3 °F | 2.66 in. |
| November | 28.7 °F | 44.5 °F | 1.88 in. |
| December | 17.1 °F | 31.6 °F | 1.46 in. |
| Annual | 38 °F | 56.7 °F | 37.86 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |