Kieler, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.9 °F (low) to 56.9 °F (high). Annual precipitation averages 38.2 Inches. Kieler is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 10.6 °F | 26.7 °F | 1.28 in. |
| February | 13.9 °F | 31.2 °F | 1.5 in. |
| March | 25.4 °F | 43.9 °F | 2.06 in. |
| April | 36.7 °F | 57.6 °F | 3.83 in. |
| May | 48.4 °F | 69.5 °F | 4.49 in. |
| June | 58.8 °F | 79.2 °F | 5.67 in. |
| July | 62.5 °F | 82.3 °F | 5.0 in. |
| August | 60.4 °F | 80.5 °F | 3.88 in. |
| September | 52.1 °F | 73.7 °F | 3.71 in. |
| October | 40.2 °F | 60.6 °F | 2.89 in. |
| November | 28.5 °F | 45.1 °F | 2.22 in. |
| December | 17.3 °F | 32.4 °F | 1.71 in. |
| Annual | 37.9 °F | 56.9 °F | 38.24 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |