| 2023 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 3a: -40°F to -35°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F | |
| Average First Frost Date: | Sep.1 - Sep. 10 | |
| Average Last Frost Date: | Jun. 11 - Jun. 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50p - Toimi Drumlins | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 55607 - Isabella, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -12 | -6 | 8 | 22 | 35 | 46 | 51 | 50 | 41 | 31 | 16 | 0 | 24 |
| Avg Max Temp (°F) | 17 | 25 | 35 | 48 | 61 | 71 | 76 | 74 | 63 | 49 | 33 | 21 | 48 |
| Avg Precip (In.) | 1.21 | .82 | 1.46 | 1.87 | 3.04 | 4.07 | 4.07 | 4.02 | 3.57 | 2.78 | 1.76 | 1.08 | 29.73 |