| 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 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 47b - Des Moines Lobe | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56073 - New Ulm, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 11 | 23 | 35 | 48 | 57 | 62 | 59 | 50 | 38 | 24 | 10 | 35 |
| Avg Max Temp (°F) | 23 | 30 | 42 | 58 | 72 | 80 | 84 | 81 | 73 | 61 | 41 | 27 | 56 |
| Avg Precip (In.) | .75 | .68 | 2 | 2.62 | 3.44 | 4.47 | 4 | 4.01 | 2.76 | 2.15 | 1.86 | .77 | 29.53 |