Oceanside, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.4 °C (low) to 16.6 °C (high). Annual precipitation averages 1242.3 Millimeters. Oceanside is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3 °C | 4.4 °C | 96.27 mm |
| February | -2.4 °C | 5.4 °C | 73.66 mm |
| March | 0.9 °C | 9 °C | 117.35 mm |
| April | 6.1 °C | 15.1 °C | 104.14 mm |
| May | 11.3 °C | 20.4 °C | 102.36 mm |
| June | 16.8 °C | 25.6 °C | 113.79 mm |
| July | 20.2 °C | 28.7 °C | 106.68 mm |
| August | 19.7 °C | 28.1 °C | 111.25 mm |
| September | 16.1 °C | 24.7 °C | 99.82 mm |
| October | 10.1 °C | 18.4 °C | 121.16 mm |
| November | 4.6 °C | 12.4 °C | 88.39 mm |
| December | 0.4 °C | 7.3 °C | 107.44 mm |
| Annual | 8.4 °C | 16.6 °C | 1242.31 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |