| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | 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: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 43b - Little Missouri Badlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 58645 - Medora, ND | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 11 | 20 | 30 | 42 | 50 | 55 | 54 | 42 | 31 | 18 | 8 | 30 |
| Avg Max Temp (°F) | 27 | 35 | 44 | 58 | 70 | 79 | 86 | 86 | 74 | 61 | 42 | 30 | 58 |
| Avg Precip (In.) | .37 | .36 | .65 | 1.35 | 2.27 | 2.91 | 2.14 | 1.4 | 1.44 | 1.13 | .58 | .37 | 14.96 |