Colfax, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.2 °F (low) to 54.3 °F (high). Annual precipitation averages 33.9 Inches. Colfax 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 | 5.2 °F | 23.1 °F | 1.04 in. |
| February | 8.3 °F | 28.0 °F | 1.07 in. |
| March | 20.5 °F | 40.4 °F | 1.86 in. |
| April | 33.3 °F | 55.2 °F | 3.08 in. |
| May | 45.6 °F | 67.9 °F | 4.1 in. |
| June | 55.9 °F | 77.1 °F | 4.85 in. |
| July | 60.0 °F | 81.3 °F | 4.01 in. |
| August | 57.6 °F | 79.4 °F | 4.25 in. |
| September | 49.4 °F | 71.7 °F | 3.6 in. |
| October | 37.1 °F | 57.6 °F | 2.83 in. |
| November | 25.1 °F | 41.5 °F | 1.78 in. |
| December | 12.7 °F | 28.3 °F | 1.4 in. |
| Annual | 34.2 °F | 54.3 °F | 33.87 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |