| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 4a: -30°F to -25°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: | 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 56537 - Fergus Falls, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -4 | 4 | 17 | 32 | 46 | 55 | 59 | 57 | 46 | 34 | 20 | 4 | 31 |
| Avg Max Temp (°F) | 16 | 24 | 36 | 54 | 68 | 76 | 81 | 79 | 69 | 56 | 36 | 22 | 51 |
| Avg Precip (In.) | .93 | .57 | 1.37 | 1.64 | 2.67 | 3.79 | 3.44 | 3.12 | 2.23 | 2.01 | 1.14 | .51 | 23.43 |