Fire Island, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 46.1 °F (low) to 60 °F (high). Annual precipitation averages 47.7 Inches. Fire Island is located in USDA Plant Hardiness Zone 7b. 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 | 25.6 °F | 38.9 °F | 3.77 in. |
| February | 26.4 °F | 40.4 °F | 3.22 in. |
| March | 32.1 °F | 46.7 °F | 4.58 in. |
| April | 41.7 °F | 56.6 °F | 4.13 in. |
| May | 51.3 °F | 65.6 °F | 3.67 in. |
| June | 61.3 °F | 75.6 °F | 4.14 in. |
| July | 67.4 °F | 81.2 °F | 3.45 in. |
| August | 66.6 °F | 81.0 °F | 4.13 in. |
| September | 60.2 °F | 73.3 °F | 3.88 in. |
| October | 49.3 °F | 62.7 °F | 4.56 in. |
| November | 39.5 °F | 53.4 °F | 3.57 in. |
| December | 31.7 °F | 44.3 °F | 4.56 in. |
| Annual | 46.1 °F | 60 °F | 47.66 in. |
| 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |