Walworth, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.8 °F (low) to 57.1 °F (high). Annual precipitation averages 38.1 Inches. Walworth is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.0 °F | 28.5 °F | 1.74 in. |
| February | 15.6 °F | 32.4 °F | 1.74 in. |
| March | 25.1 °F | 44.2 °F | 2.2 in. |
| April | 35.2 °F | 57.2 °F | 3.76 in. |
| May | 47.8 °F | 68.4 °F | 4.4 in. |
| June | 56.7 °F | 78.1 °F | 5.59 in. |
| July | 61.1 °F | 81.7 °F | 3.66 in. |
| August | 59.4 °F | 80.3 °F | 4.13 in. |
| September | 51.6 °F | 73.8 °F | 3.62 in. |
| October | 40.0 °F | 60.9 °F | 2.96 in. |
| November | 29.4 °F | 46.2 °F | 2.34 in. |
| December | 18.7 °F | 33.5 °F | 2.0 in. |
| Annual | 37.8 °F | 57.1 °F | 38.14 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |