| 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: | 48d - Lake Agassiz Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 56751 - Roseau, MN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -10 | -3 | 11 | 28 | 42 | 51 | 55 | 53 | 43 | 31 | 15 | -1 | 26 |
| Avg Max Temp (°F) | 11 | 19 | 32 | 51 | 66 | 74 | 78 | 77 | 66 | 52 | 31 | 16 | 48 |
| Avg Precip (In.) | .67 | .5 | .59 | 1.16 | 2.29 | 3.69 | 3.42 | 3.08 | 2.54 | 1.52 | .86 | .6 | 20.91 |