| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F 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: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 51i - Big Woods |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56082 - Saint Peter, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 2 | 8 | 21 | 34 | 47 | 57 | 61 | 59 | 48 | 36 | 23 | 9 | 34 |
| Avg Max Temp (°F) | 22 | 29 | 41 | 57 | 71 | 80 | 83 | 81 | 73 | 60 | 41 | 27 | 55 |
| Avg Precip (In.) | .85 | .57 | 1.9 | 2.48 | 3.54 | 4.67 | 4.03 | 4.23 | 2.81 | 2.15 | 1.72 | .9 | 29.84 |