Whitewood, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.5 °C (low) to 14.9 °C (high). Annual precipitation averages 635.8 Millimeters. Whitewood is located in USDA Plant Hardiness Zone 5b. 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 | -9.6 °C | 2.8 °C | 18.54 mm |
| February | -8.8 °C | 3.3 °C | 25.4 mm |
| March | -4.8 °C | 8.4 °C | 42.93 mm |
| April | -0.3 °C | 13.1 °C | 74.68 mm |
| May | 5.3 °C | 18.2 °C | 112.52 mm |
| June | 10.6 °C | 24.3 °C | 98.04 mm |
| July | 14.3 °C | 29 °C | 59.44 mm |
| August | 13.2 °C | 28.6 °C | 47.75 mm |
| September | 8.4 °C | 23.6 °C | 40.64 mm |
| October | 1.8 °C | 15.3 °C | 62.23 mm |
| November | -4.3 °C | 8.4 °C | 27.69 mm |
| December | -8.2 °C | 3.3 °C | 25.91 mm |
| Annual | 1.5 °C | 14.9 °C | 635.77 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |