Hebron, North Dakota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from -1.2 °C (low) to 12.3 °C (high). Annual precipitation averages 453.2 Millimeters. Hebron is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.9 °C | -4.6 °C | 8.64 mm |
| February | -13.9 °C | -2.1 °C | 12.19 mm |
| March | -7.9 °C | 4.7 °C | 17.27 mm |
| April | -1.9 °C | 12.3 °C | 34.04 mm |
| May | 4.6 °C | 18.9 °C | 64.77 mm |
| June | 10.4 °C | 23.9 °C | 88.65 mm |
| July | 13.3 °C | 28.2 °C | 71.37 mm |
| August | 11.9 °C | 28.1 °C | 48.51 mm |
| September | 6.6 °C | 22.4 °C | 44.2 mm |
| October | -0.4 °C | 13.4 °C | 37.34 mm |
| November | -7.6 °C | 4.6 °C | 13.72 mm |
| December | -13.3 °C | -2.2 °C | 12.45 mm |
| Annual | -1.2 °C | 12.3 °C | 453.15 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |