Wakpala, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.7 °C (low) to 13.1 °C (high). Annual precipitation averages 439.9 Millimeters. Wakpala 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 | -15.3 °C | -4.7 °C | 8.13 mm |
| February | -13.4 °C | -2.1 °C | 11.18 mm |
| March | -6.9 °C | 5.2 °C | 16.76 mm |
| April | -0.3 °C | 13.2 °C | 32.51 mm |
| May | 6.7 °C | 19.9 °C | 69.6 mm |
| June | 12.8 °C | 25.5 °C | 80.77 mm |
| July | 16 °C | 29.4 °C | 65.53 mm |
| August | 14.5 °C | 28.7 °C | 53.09 mm |
| September | 9.3 °C | 23.8 °C | 40.13 mm |
| October | 1.8 °C | 14.6 °C | 42.16 mm |
| November | -5.6 °C | 5.8 °C | 10.67 mm |
| December | -11.8 °C | -1.6 °C | 9.4 mm |
| Annual | 0.7 °C | 13.1 °C | 439.93 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |