| 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 3b: -35F to -30F | |
| 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: | 48a - Glacial Lake Agassiz Basin | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56716 - Crookston, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -7 | 1 | 15 | 31 | 44 | 53 | 57 | 55 | 44 | 33 | 17 | 1 | 29 |
| Avg Max Temp (°F) | 14 | 21 | 33 | 52 | 68 | 77 | 81 | 80 | 69 | 55 | 34 | 20 | 50 |
| Avg Precip (In.) | .55 | .53 | .75 | 1.3 | 2.45 | 3.54 | 3.13 | 2.97 | 2.25 | 1.82 | .97 | .5 | 20.74 |