Ong, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.3 °C (low) to 17.3 °C (high). Annual precipitation averages 713 Millimeters. Ong 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 | -9.6 °C | 2 °C | 18.54 mm |
| February | -7.5 °C | 4.6 °C | 20.83 mm |
| March | -2.5 °C | 11.5 °C | 36.58 mm |
| April | 3.3 °C | 17.4 °C | 62.23 mm |
| May | 9.9 °C | 22.8 °C | 116.84 mm |
| June | 16 °C | 28.6 °C | 98.3 mm |
| July | 18.3 °C | 30.7 °C | 100.58 mm |
| August | 17.1 °C | 29.6 °C | 86.87 mm |
| September | 11.9 °C | 26.2 °C | 61.21 mm |
| October | 4.7 °C | 19.3 °C | 55.63 mm |
| November | -2.4 °C | 10.8 °C | 30.48 mm |
| December | -7.5 °C | 3.8 °C | 24.89 mm |
| Annual | 4.3 °C | 17.3 °C | 712.98 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 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 |