Hansboro, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.7 °C (low) to 9 °C (high). Annual precipitation averages 521 Millimeters. Hansboro is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -20.1 °C | -9.8 °C | 18.8 mm |
| February | -18.1 °C | -7.3 °C | 18.29 mm |
| March | -10.8 °C | -0.7 °C | 19.3 mm |
| April | -2.6 °C | 9.6 °C | 24.89 mm |
| May | 4.3 °C | 17.7 °C | 68.83 mm |
| June | 10.4 °C | 22.7 °C | 96.52 mm |
| July | 12.6 °C | 25.4 °C | 78.99 mm |
| August | 11.3 °C | 25.7 °C | 66.29 mm |
| September | 6.3 °C | 20.3 °C | 45.97 mm |
| October | -0.8 °C | 11.2 °C | 37.85 mm |
| November | -9 °C | 0.7 °C | 23.88 mm |
| December | -16.3 °C | -7.1 °C | 21.34 mm |
| Annual | -2.7 °C | 9 °C | 520.95 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |