Helenville, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.4 °F (low) to 56.8 °F (high). Annual precipitation averages 37.1 Inches. Helenville 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 | 11.4 °F | 27.4 °F | 1.59 in. |
| February | 14.1 °F | 31.1 °F | 1.57 in. |
| March | 24.4 °F | 43.1 °F | 2.06 in. |
| April | 35.7 °F | 56.5 °F | 3.79 in. |
| May | 47.3 °F | 68.8 °F | 4.18 in. |
| June | 57.3 °F | 78.7 °F | 5.19 in. |
| July | 61.4 °F | 82.4 °F | 4.1 in. |
| August | 59.5 °F | 80.5 °F | 4.09 in. |
| September | 51.3 °F | 73.9 °F | 3.41 in. |
| October | 39.9 °F | 60.6 °F | 2.97 in. |
| November | 28.7 °F | 45.7 °F | 2.23 in. |
| December | 18.2 °F | 32.8 °F | 1.87 in. |
| Annual | 37.4 °F | 56.8 °F | 37.05 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 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |