| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | October 1 - 10 | |
| Average Last Frost Date: | May 1 - 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 46n - James River Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 57301 - Mitchell, SD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 11 | 23 | 35 | 47 | 57 | 62 | 60 | 49 | 36 | 22 | 10 | 35 |
| Avg Max Temp (°F) | 26 | 33 | 44 | 59 | 71 | 81 | 87 | 85 | 76 | 62 | 43 | 30 | 58 |
| Avg Precip (In.) | .47 | .63 | 1.64 | 2.66 | 3.35 | 3.5 | 2.69 | 2.37 | 2.28 | 1.61 | 1.17 | .51 | 22.89 |