| 2023 Hardiness Zone: | 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: | 46c - Glacial Lake Basins |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 58301 - Devils Lake, ND | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -4 | 4 | 16 | 31 | 44 | 53 | 58 | 55 | 45 | 34 | 18 | 3 | 30 |
| Avg Max Temp (°F) | 14 | 22 | 33 | 52 | 67 | 75 | 80 | 79 | 68 | 54 | 33 | 19 | 50 |
| Avg Precip (In.) | .57 | .51 | .81 | .91 | 2.16 | 3.73 | 3.21 | 2.2 | 1.82 | 1.46 | .84 | .55 | 18.76 |