| 2023 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 3a: -40°F to -35°F | |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 3a: -40°F to -35°F | |
| 1990 Hardiness Zone: | Zone 3a: -40F to -35F | |
| Average First Frost Date: | Sep.11 - Sep. 20 | |
| Average Last Frost Date: | Jun. 1 - Jun. 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 49b - Forested Lake Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56649 - International Falls, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -9 | -1 | 12 | 27 | 40 | 50 | 54 | 52 | 42 | 32 | 16 | -1 | 26 |
| Avg Max Temp (°F) | 14 | 22 | 35 | 51 | 66 | 74 | 79 | 76 | 65 | 52 | 32 | 18 | 49 |
| Avg Precip (In.) | .83 | .64 | .96 | 1.38 | 2.56 | 4.01 | 3.51 | 3.18 | 3.07 | 2.02 | 1.36 | .7 | 24.23 |