| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°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: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 43i - Keya Paha Tablelands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 57770 - Pine Ridge, SD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 14 | 22 | 31 | 42 | 52 | 58 | 56 | 45 | 32 | 20 | 11 | 33 |
| Avg Max Temp (°F) | 34 | 40 | 49 | 59 | 70 | 80 | 88 | 87 | 77 | 64 | 46 | 37 | 61 |
| Avg Precip (In.) | .41 | .46 | 1.04 | 2.03 | 3.06 | 2.86 | 2.71 | 1.73 | 1.41 | 1.25 | .65 | .42 | 18.02 |