Greenleaf, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.3 °F (low) to 54.5 °F (high). Annual precipitation averages 32.5 Inches. Greenleaf 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 | 10.5 °F | 25.5 °F | 1.41 in. |
| February | 12.5 °F | 29.0 °F | 1.14 in. |
| March | 22.4 °F | 40.0 °F | 1.78 in. |
| April | 34.0 °F | 53.4 °F | 3.12 in. |
| May | 45.6 °F | 66.4 °F | 3.62 in. |
| June | 55.9 °F | 76.0 °F | 4.42 in. |
| July | 60.3 °F | 80.6 °F | 3.76 in. |
| August | 58.8 °F | 78.7 °F | 3.49 in. |
| September | 50.8 °F | 71.7 °F | 3.3 in. |
| October | 39.4 °F | 58.0 °F | 2.9 in. |
| November | 28.3 °F | 43.7 °F | 1.93 in. |
| December | 17.4 °F | 31.2 °F | 1.65 in. |
| Annual | 36.3 °F | 54.5 °F | 32.52 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Dfb - Humid Continental Mild Summer, Wet All Year |