Omaha, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 16.4 °C (high). Annual precipitation averages 836.7 Millimeters. Omaha is located in USDA Plant Hardiness Zone 6a. 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 | -10.1 °C | 0.2 °C | 20.83 mm |
| February | -8.1 °C | 2.9 °C | 26.67 mm |
| March | -2.1 °C | 9.9 °C | 45.21 mm |
| April | 4 °C | 17 °C | 87.63 mm |
| May | 10.8 °C | 22.7 °C | 127.51 mm |
| June | 16.8 °C | 28.3 °C | 119.89 mm |
| July | 19 °C | 30.2 °C | 90.42 mm |
| August | 17.6 °C | 29.1 °C | 102.11 mm |
| September | 12.3 °C | 25.6 °C | 78.99 mm |
| October | 5.3 °C | 18.3 °C | 65.79 mm |
| November | -1.7 °C | 9.7 °C | 38.1 mm |
| December | -7.3 °C | 2.6 °C | 33.53 mm |
| Annual | 4.7 °C | 16.4 °C | 836.68 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 6a : -23.3°C to -20.6°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 |