Colome, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 15.7 °C (high). Annual precipitation averages 622.1 Millimeters. Colome 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 | -10.8 °C | 0.9 °C | 12.19 mm |
| February | -9.1 °C | 3.2 °C | 16.26 mm |
| March | -4.3 °C | 8.9 °C | 29.72 mm |
| April | 1.2 °C | 14.6 °C | 70.87 mm |
| May | 7.2 °C | 20.7 °C | 99.06 mm |
| June | 13.2 °C | 26.6 °C | 105.41 mm |
| July | 16.3 °C | 30.9 °C | 73.15 mm |
| August | 15.2 °C | 29.9 °C | 69.6 mm |
| September | 10.1 °C | 25.3 °C | 59.69 mm |
| October | 2.6 °C | 17 °C | 52.07 mm |
| November | -4.2 °C | 8.6 °C | 18.8 mm |
| December | -9.2 °C | 2.2 °C | 15.24 mm |
| Annual | 2.4 °C | 15.7 °C | 622.06 mm |
| 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |