Freeport, New York has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.2 °C (low) to 16.7 °C (high). Annual precipitation averages 1223.3 Millimeters. Freeport 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. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.1 °C | 4.3 °C | 96.27 mm |
| February | -2.6 °C | 5.4 °C | 74.93 mm |
| March | 0.8 °C | 8.9 °C | 114.55 mm |
| April | 5.9 °C | 15.2 °C | 104.14 mm |
| May | 11.1 °C | 20.6 °C | 100.33 mm |
| June | 16.7 °C | 25.6 °C | 111 mm |
| July | 20.1 °C | 28.8 °C | 101.09 mm |
| August | 19.5 °C | 28.2 °C | 109.73 mm |
| September | 15.7 °C | 24.7 °C | 100.08 mm |
| October | 9.6 °C | 18.5 °C | 118.36 mm |
| November | 4.3 °C | 12.4 °C | 85.6 mm |
| December | 0.2 °C | 7.3 °C | 107.19 mm |
| Annual | 8.2 °C | 16.7 °C | 1223.27 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| 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 |