Hankinson, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.5 °F (low) to 52.5 °F (high). Annual precipitation averages 25.3 Inches. Hankinson is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.1 °F | 19.1 °F | 0.83 in. |
| February | 5.0 °F | 23.5 °F | 0.75 in. |
| March | 17.9 °F | 36.2 °F | 1.05 in. |
| April | 32.0 °F | 53.0 °F | 1.9 in. |
| May | 45.3 °F | 67.3 °F | 3.13 in. |
| June | 56.6 °F | 77.0 °F | 4.12 in. |
| July | 60.5 °F | 81.5 °F | 3.85 in. |
| August | 57.5 °F | 79.8 °F | 2.83 in. |
| September | 48.2 °F | 71.7 °F | 2.75 in. |
| October | 35.1 °F | 56.3 °F | 2.43 in. |
| November | 21.5 °F | 39.1 °F | 0.88 in. |
| December | 8.7 °F | 25.3 °F | 0.79 in. |
| Annual | 32.5 °F | 52.5 °F | 25.31 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |