Oneida, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.4 °C (low) to 19.7 °C (high). Annual precipitation averages 1309.9 Millimeters. Oneida is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.5 °C | 7.1 °C | 99.57 mm |
| February | -3.3 °C | 9.4 °C | 100.58 mm |
| March | 0.2 °C | 14.7 °C | 115.57 mm |
| April | 5.1 °C | 20.8 °C | 109.47 mm |
| May | 11.1 °C | 24.7 °C | 129.54 mm |
| June | 15.7 °C | 28.3 °C | 127 mm |
| July | 18.1 °C | 29.8 °C | 143.76 mm |
| August | 17.3 °C | 29.6 °C | 110.74 mm |
| September | 13.5 °C | 27.1 °C | 82.3 mm |
| October | 6.4 °C | 21.4 °C | 81.53 mm |
| November | 0.1 °C | 14.9 °C | 86.61 mm |
| December | -2.4 °C | 9.1 °C | 123.19 mm |
| Annual | 6.4 °C | 19.7 °C | 1309.86 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |