Wounded Knee, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.3 °C (low) to 16.3 °C (high). Annual precipitation averages 494.8 Millimeters. Wounded Knee 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 | -10.7 °C | 2.5 °C | 11.43 mm |
| February | -9.4 °C | 4.2 °C | 14.22 mm |
| March | -4.8 °C | 10.1 °C | 28.96 mm |
| April | -0.2 °C | 14.7 °C | 56.64 mm |
| May | 5.8 °C | 20.2 °C | 80.01 mm |
| June | 11.6 °C | 26.5 °C | 86.61 mm |
| July | 15.2 °C | 31.2 °C | 60.96 mm |
| August | 13.8 °C | 30.7 °C | 46.99 mm |
| September | 8.1 °C | 25.5 °C | 38.1 mm |
| October | 1 °C | 16.8 °C | 41.66 mm |
| November | -5.3 °C | 9.4 °C | 16.51 mm |
| December | -9.9 °C | 3.2 °C | 12.7 mm |
| Annual | 1.3 °C | 16.3 °C | 494.79 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |