Kellnersville, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.9 °F (low) to 54 °F (high). Annual precipitation averages 31.6 Inches. Kellnersville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.4 °F | 25.3 °F | 1.48 in. |
| February | 12.3 °F | 28.8 °F | 1.11 in. |
| March | 22.2 °F | 40.1 °F | 1.67 in. |
| April | 33.5 °F | 52.5 °F | 3.03 in. |
| May | 45.0 °F | 65.1 °F | 3.47 in. |
| June | 55.1 °F | 74.8 °F | 4.07 in. |
| July | 59.5 °F | 79.7 °F | 3.58 in. |
| August | 58.2 °F | 78.1 °F | 3.45 in. |
| September | 50.4 °F | 71.2 °F | 3.17 in. |
| October | 39.0 °F | 57.4 °F | 2.87 in. |
| November | 28.2 °F | 43.7 °F | 2.0 in. |
| December | 17.2 °F | 30.9 °F | 1.66 in. |
| Annual | 35.9 °F | 54 °F | 31.56 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |