Howard, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.3 °F (low) to 54.2 °F (high). Annual precipitation averages 32.7 Inches. Howard 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 | 10.0 °F | 25.2 °F | 1.55 in. |
| February | 11.5 °F | 28.6 °F | 1.21 in. |
| March | 21.3 °F | 39.6 °F | 1.85 in. |
| April | 32.8 °F | 53.0 °F | 3.25 in. |
| May | 44.3 °F | 66.0 °F | 3.76 in. |
| June | 54.6 °F | 75.5 °F | 4.09 in. |
| July | 59.0 °F | 80.1 °F | 3.68 in. |
| August | 57.7 °F | 78.4 °F | 3.41 in. |
| September | 49.5 °F | 71.3 °F | 3.36 in. |
| October | 38.6 °F | 58.0 °F | 2.81 in. |
| November | 27.6 °F | 43.4 °F | 1.93 in. |
| December | 17.1 °F | 31.1 °F | 1.77 in. |
| Annual | 35.3 °F | 54.2 °F | 32.67 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 |