Elmwood, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.8 °F (low) to 54.6 °F (high). Annual precipitation averages 34.6 Inches. Elmwood is located in USDA Plant Hardiness Zone 4b. 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 | 5.6 °F | 23.3 °F | 1.01 in. |
| February | 8.9 °F | 28.2 °F | 1.04 in. |
| March | 21.1 °F | 40.6 °F | 1.87 in. |
| April | 33.8 °F | 55.6 °F | 3.05 in. |
| May | 46.2 °F | 68.1 °F | 4.23 in. |
| June | 56.6 °F | 77.4 °F | 5.26 in. |
| July | 60.6 °F | 81.6 °F | 4.05 in. |
| August | 58.2 °F | 79.6 °F | 4.51 in. |
| September | 50.2 °F | 72.2 °F | 3.67 in. |
| October | 37.6 °F | 58.2 °F | 2.76 in. |
| November | 25.3 °F | 42.0 °F | 1.74 in. |
| December | 13.1 °F | 28.6 °F | 1.38 in. |
| Annual | 34.8 °F | 54.6 °F | 34.57 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |