Hebron, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.6 °C (low) to 15.5 °C (high). Annual precipitation averages 1031 Millimeters. Hebron is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | -0.1 °C | 61.21 mm |
| February | -7.2 °C | 2.2 °C | 55.63 mm |
| March | -2.2 °C | 8.4 °C | 63.5 mm |
| April | 3.5 °C | 15.6 °C | 92.71 mm |
| May | 9.8 °C | 21.7 °C | 109.98 mm |
| June | 15.2 °C | 26.8 °C | 119.38 mm |
| July | 17.1 °C | 28.5 °C | 119.13 mm |
| August | 16.1 °C | 27.7 °C | 108.46 mm |
| September | 11.7 °C | 24.7 °C | 83.31 mm |
| October | 5.5 °C | 17.8 °C | 90.93 mm |
| November | -0.1 °C | 9.6 °C | 70.1 mm |
| December | -5.4 °C | 2.8 °C | 56.64 mm |
| Annual | 4.6 °C | 15.5 °C | 1030.98 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |