Ong, Nebraska has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.8 °F (low) to 63.1 °F (high). Annual precipitation averages 28.1 Inches. 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 | 14.8 °F | 35.6 °F | 0.73 in. |
| February | 18.5 °F | 40.2 °F | 0.82 in. |
| March | 27.5 °F | 52.7 °F | 1.44 in. |
| April | 38.0 °F | 63.4 °F | 2.45 in. |
| May | 49.9 °F | 73.0 °F | 4.6 in. |
| June | 60.8 °F | 83.4 °F | 3.87 in. |
| July | 65.0 °F | 87.2 °F | 3.96 in. |
| August | 62.7 °F | 85.3 °F | 3.42 in. |
| September | 53.4 °F | 79.2 °F | 2.41 in. |
| October | 40.5 °F | 66.8 °F | 2.19 in. |
| November | 27.7 °F | 51.4 °F | 1.2 in. |
| December | 18.5 °F | 38.8 °F | 0.98 in. |
| Annual | 39.8 °F | 63.1 °F | 28.07 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |