| 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 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 3a: -40F to -35F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 51j - Alexandria Moraines and Detroit Lakes Outwash Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56573 - Perham, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -4 | 4 | 17 | 31 | 45 | 55 | 59 | 57 | 47 | 35 | 20 | 4 | 31 |
| Avg Max Temp (°F) | 18 | 25 | 37 | 55 | 69 | 77 | 81 | 79 | 69 | 56 | 36 | 22 | 52 |
| Avg Precip (In.) | .83 | .57 | 1.3 | 1.81 | 2.94 | 4.32 | 3.91 | 3.32 | 2.53 | 2.32 | 1.17 | .58 | 25.6 |