Humbird, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 12.5 °C (high). Annual precipitation averages 893.1 Millimeters. Humbird is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15 °C | -4.7 °C | 30.73 mm |
| February | -13.3 °C | -1.9 °C | 26.92 mm |
| March | -6.6 °C | 4.9 °C | 45.47 mm |
| April | 0.3 °C | 12.8 °C | 83.82 mm |
| May | 6.9 °C | 19.9 °C | 107.95 mm |
| June | 12.6 °C | 25 °C | 129.03 mm |
| July | 14.7 °C | 27.3 °C | 100.84 mm |
| August | 13.6 °C | 26.2 °C | 109.22 mm |
| September | 8.8 °C | 22.1 °C | 100.33 mm |
| October | 2.3 °C | 14.4 °C | 74.17 mm |
| November | -4.2 °C | 5.7 °C | 47.5 mm |
| December | -10.8 °C | -1.7 °C | 37.08 mm |
| Annual | 0.8 °C | 12.5 °C | 893.06 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |