Houlton, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.8 °F (low) to 54.7 °F (high). Annual precipitation averages 34.5 Inches. Houlton is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.2 °F | 23.4 °F | 0.93 in. |
| February | 9.5 °F | 28.4 °F | 0.86 in. |
| March | 21.5 °F | 40.7 °F | 1.62 in. |
| April | 34.8 °F | 55.6 °F | 3.17 in. |
| May | 47.4 °F | 67.8 °F | 4.2 in. |
| June | 57.8 °F | 77.6 °F | 5.06 in. |
| July | 62.4 °F | 82.0 °F | 4.38 in. |
| August | 59.8 °F | 79.8 °F | 4.69 in. |
| September | 51.5 °F | 72.1 °F | 3.53 in. |
| October | 38.6 °F | 58.0 °F | 3.04 in. |
| November | 26.0 °F | 42.3 °F | 1.73 in. |
| December | 13.6 °F | 28.5 °F | 1.27 in. |
| Annual | 35.8 °F | 54.7 °F | 34.48 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°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 |