Oneida Castle, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.5 °C (low) to 13.9 °C (high). Annual precipitation averages 1124 Millimeters. Oneida Castle is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.9 °C | -0.8 °C | 72.39 mm |
| February | -9.4 °C | 0.4 °C | 64.77 mm |
| March | -4.8 °C | 4.9 °C | 78.23 mm |
| April | 1.8 °C | 13.1 °C | 89.66 mm |
| May | 8.2 °C | 20.4 °C | 98.81 mm |
| June | 13.3 °C | 25 °C | 113.03 mm |
| July | 16 °C | 27.6 °C | 105.16 mm |
| August | 15.2 °C | 26.7 °C | 107.44 mm |
| September | 11.2 °C | 22.8 °C | 101.6 mm |
| October | 5.3 °C | 15.4 °C | 116.84 mm |
| November | 0.1 °C | 8.6 °C | 87.38 mm |
| December | -5.4 °C | 2.4 °C | 88.65 mm |
| Annual | 3.5 °C | 13.9 °C | 1123.96 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |