| 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 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dwb - Humid Continental Mild Summer With Dry Winters | |
| Ecoregion: | 43a - Missouri Plateau | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 58545 - Hazen, ND | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 8 | 19 | 30 | 42 | 51 | 55 | 54 | 43 | 32 | 18 | 5 | 30 |
| Avg Max Temp (°F) | 21 | 29 | 40 | 57 | 70 | 78 | 84 | 84 | 72 | 59 | 38 | 26 | 55 |
| Avg Precip (In.) | .36 | .41 | .7 | 1.61 | 2.22 | 3.24 | 2.48 | 1.69 | 1.61 | 1.35 | .67 | .39 | 16.74 |