Fair Haven, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.5 °F (low) to 56.7 °F (high). Annual precipitation averages 42.1 Inches. Fair Haven is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.9 °F | 32.4 °F | 3.48 in. |
| February | 18.9 °F | 33.9 °F | 2.68 in. |
| March | 25.7 °F | 41.7 °F | 2.96 in. |
| April | 36.3 °F | 53.7 °F | 3.41 in. |
| May | 47.0 °F | 66.4 °F | 3.31 in. |
| June | 56.9 °F | 74.8 °F | 3.54 in. |
| July | 63.2 °F | 79.8 °F | 3.56 in. |
| August | 61.9 °F | 79.0 °F | 3.78 in. |
| September | 54.9 °F | 72.5 °F | 3.63 in. |
| October | 44.1 °F | 59.7 °F | 4.26 in. |
| November | 34.5 °F | 48.5 °F | 3.79 in. |
| December | 25.0 °F | 37.6 °F | 3.65 in. |
| Annual | 40.5 °F | 56.7 °F | 42.05 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |