| 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: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dwa - Humid Continental Hot Summers With Dry Winters | |
| Ecoregion: | 46m - Big Sioux Basin | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 57006 - Brookings, SD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 8 | 20 | 33 | 45 | 54 | 59 | 57 | 46 | 34 | 20 | 6 | 32 |
| Avg Max Temp (°F) | 22 | 28 | 40 | 56 | 69 | 78 | 83 | 80 | 72 | 59 | 40 | 26 | 54 |
| Avg Precip (In.) | .35 | .42 | 1.32 | 2.09 | 2.98 | 4.18 | 3.16 | 2.97 | 2.46 | 1.81 | 1.03 | .27 | 23.04 |