| 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 | |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50q - Itasca and St. Louis Moraines | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56435 - Backus, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -5 | 2 | 15 | 29 | 43 | 52 | 57 | 55 | 45 | 34 | 19 | 3 | 29 |
| Avg Max Temp (°F) | 17 | 25 | 37 | 53 | 68 | 76 | 80 | 78 | 67 | 54 | 35 | 21 | 51 |
| Avg Precip (In.) | .86 | .59 | 1.39 | 1.89 | 3.02 | 4.2 | 4.21 | 3.64 | 2.86 | 2.58 | 1.48 | .72 | 27.44 |