Lebanon, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3 °C (low) to 18.7 °C (high). Annual precipitation averages 574.6 Millimeters. Lebanon is located in USDA Plant Hardiness Zone 6a. 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 | -9.8 °C | 4.8 °C | 10.41 mm |
| February | -8.3 °C | 6.7 °C | 15.75 mm |
| March | -3.5 °C | 13.1 °C | 28.45 mm |
| April | 1.8 °C | 18.1 °C | 55.63 mm |
| May | 8.2 °C | 23.4 °C | 86.11 mm |
| June | 14.4 °C | 29.6 °C | 83.82 mm |
| July | 17.4 °C | 32.5 °C | 92.2 mm |
| August | 16.1 °C | 31.2 °C | 76.45 mm |
| September | 10.5 °C | 27.2 °C | 43.94 mm |
| October | 2.7 °C | 19.9 °C | 44.45 mm |
| November | -4.3 °C | 12 °C | 21.08 mm |
| December | -9 °C | 5.5 °C | 16.26 mm |
| Annual | 3 °C | 18.7 °C | 574.55 mm |
| 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |