Houlton, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 12.6 °C (high). Annual precipitation averages 875.8 Millimeters. 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 | -14.3 °C | -4.8 °C | 23.62 mm |
| February | -12.5 °C | -2 °C | 21.84 mm |
| March | -5.8 °C | 4.8 °C | 41.15 mm |
| April | 1.6 °C | 13.1 °C | 80.52 mm |
| May | 8.6 °C | 19.9 °C | 106.68 mm |
| June | 14.3 °C | 25.3 °C | 128.52 mm |
| July | 16.9 °C | 27.8 °C | 111.25 mm |
| August | 15.4 °C | 26.6 °C | 119.13 mm |
| September | 10.8 °C | 22.3 °C | 89.66 mm |
| October | 3.7 °C | 14.4 °C | 77.22 mm |
| November | -3.3 °C | 5.7 °C | 43.94 mm |
| December | -10.2 °C | -1.9 °C | 32.26 mm |
| Annual | 2.1 °C | 12.6 °C | 875.79 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |