| 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.11 - Sep. 20 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 43a - Missouri Plateau | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 58854 - Watford City, ND | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -2 | 7 | 16 | 28 | 40 | 49 | 54 | 52 | 41 | 30 | 16 | 4 | 28 |
| Avg Max Temp (°F) | 20 | 29 | 40 | 56 | 68 | 77 | 84 | 84 | 71 | 57 | 37 | 25 | 54 |
| Avg Precip (In.) | .43 | .36 | .61 | 1.22 | 2.11 | 2.89 | 2.24 | 1.56 | 1.57 | 1.14 | .59 | .4 | 15.13 |