| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F | |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F | |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 46o - Minnesota River Prairie | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 57216 - Big Stone City, SD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 7 | 20 | 33 | 46 | 56 | 60 | 58 | 47 | 35 | 21 | 6 | 32 |
| Avg Max Temp (°F) | 21 | 27 | 39 | 56 | 70 | 79 | 84 | 82 | 72 | 59 | 39 | 25 | 54 |
| Avg Precip (In.) | .69 | .57 | 1.46 | 2.09 | 2.64 | 3.6 | 3.49 | 2.84 | 2.01 | 2.09 | 1.17 | .45 | 23.11 |