Wall, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.3 °C (low) to 15.9 °C (high). Annual precipitation averages 475.5 Millimeters. Wall is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.3 °C | 1.8 °C | 10.16 mm |
| February | -10 °C | 3.4 °C | 13.72 mm |
| March | -5.1 °C | 9.3 °C | 25.91 mm |
| April | -0.1 °C | 14.6 °C | 54.36 mm |
| May | 6.2 °C | 20.3 °C | 86.36 mm |
| June | 11.9 °C | 26.3 °C | 80.26 mm |
| July | 15.4 °C | 30.8 °C | 58.17 mm |
| August | 14.2 °C | 30.7 °C | 45.21 mm |
| September | 8.4 °C | 25.6 °C | 33.53 mm |
| October | 1.3 °C | 16.8 °C | 41.15 mm |
| November | -5.4 °C | 8.9 °C | 14.73 mm |
| December | -10.2 °C | 2.8 °C | 11.94 mm |
| Annual | 1.3 °C | 15.9 °C | 475.5 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |