Box Elder, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 35.6 °F (low) to 59.5 °F (high). Annual precipitation averages 18.3 Inches. Box Elder 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 | 13.8 °F | 36.0 °F | 0.35 in. |
| February | 15.7 °F | 37.9 °F | 0.49 in. |
| March | 23.9 °F | 47.9 °F | 0.99 in. |
| April | 32.7 °F | 56.2 °F | 2.04 in. |
| May | 43.5 °F | 65.9 °F | 3.86 in. |
| June | 53.6 °F | 77.3 °F | 3.14 in. |
| July | 60.1 °F | 85.9 °F | 2.1 in. |
| August | 58.3 °F | 85.3 °F | 1.67 in. |
| September | 48.6 °F | 76.0 °F | 1.33 in. |
| October | 36.0 °F | 60.9 °F | 1.47 in. |
| November | 24.5 °F | 47.8 °F | 0.51 in. |
| December | 16.0 °F | 37.3 °F | 0.39 in. |
| Annual | 35.6 °F | 59.5 °F | 18.34 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |