Box Elder, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2 °C (low) to 15.3 °C (high). Annual precipitation averages 465.9 Millimeters. 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 | -10.1 °C | 2.2 °C | 8.89 mm |
| February | -9.1 °C | 3.3 °C | 12.45 mm |
| March | -4.5 °C | 8.8 °C | 25.15 mm |
| April | 0.4 °C | 13.4 °C | 51.82 mm |
| May | 6.4 °C | 18.8 °C | 98.04 mm |
| June | 12 °C | 25.2 °C | 79.76 mm |
| July | 15.6 °C | 29.9 °C | 53.34 mm |
| August | 14.6 °C | 29.6 °C | 42.42 mm |
| September | 9.2 °C | 24.4 °C | 33.78 mm |
| October | 2.2 °C | 16.1 °C | 37.34 mm |
| November | -4.2 °C | 8.8 °C | 12.95 mm |
| December | -8.9 °C | 2.9 °C | 9.91 mm |
| Annual | 2 °C | 15.3 °C | 465.85 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |