| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 43f - Subhumid Pierre Shale Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 57790 - Wall, SD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 14 | 22 | 33 | 44 | 53 | 59 | 57 | 46 | 34 | 21 | 11 | 33 |
| Avg Max Temp (°F) | 32 | 39 | 48 | 59 | 70 | 79 | 87 | 87 | 77 | 63 | 45 | 36 | 60 |
| Avg Precip (In.) | .37 | .5 | 1.11 | 1.94 | 3.07 | 2.92 | 2.27 | 1.7 | 1.16 | 1.5 | .68 | .38 | 17.61 |