Wall, South Dakota has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 34.3 °F (low) to 60.7 °F (high). Annual precipitation averages 18.7 Inches. 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 | 11.6 °F | 35.2 °F | 0.4 in. |
| February | 14.0 °F | 38.2 °F | 0.54 in. |
| March | 22.8 °F | 48.7 °F | 1.02 in. |
| April | 31.8 °F | 58.3 °F | 2.14 in. |
| May | 43.1 °F | 68.5 °F | 3.4 in. |
| June | 53.4 °F | 79.3 °F | 3.16 in. |
| July | 59.7 °F | 87.4 °F | 2.29 in. |
| August | 57.6 °F | 87.2 °F | 1.78 in. |
| September | 47.2 °F | 78.1 °F | 1.32 in. |
| October | 34.3 °F | 62.3 °F | 1.62 in. |
| November | 22.2 °F | 48.0 °F | 0.58 in. |
| December | 13.7 °F | 37.0 °F | 0.47 in. |
| Annual | 34.3 °F | 60.7 °F | 18.72 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |