Columbus, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.8 °C (low) to 13.5 °C (high). Annual precipitation averages 921.8 Millimeters. Columbus is located in USDA Plant Hardiness Zone 5a. 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 | -11.8 °C | -2.9 °C | 37.34 mm |
| February | -10.4 °C | -0.8 °C | 37.34 mm |
| March | -4.4 °C | 5.9 °C | 50.29 mm |
| April | 1.9 °C | 13.4 °C | 93.98 mm |
| May | 8.4 °C | 20.3 °C | 104.9 mm |
| June | 14 °C | 25.7 °C | 131.83 mm |
| July | 16.3 °C | 27.7 °C | 106.43 mm |
| August | 15.2 °C | 26.7 °C | 101.85 mm |
| September | 10.6 °C | 23 °C | 86.61 mm |
| October | 4.2 °C | 15.6 °C | 74.42 mm |
| November | -2.1 °C | 7.3 °C | 53.85 mm |
| December | -8.1 °C | 0.1 °C | 42.93 mm |
| Annual | 2.8 °C | 13.5 °C | 921.77 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |