Jay, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.2 °F (low) to 54.7 °F (high). Annual precipitation averages 38.6 Inches. Jay is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.9 °F | 27.2 °F | 2.55 in. |
| February | 9.7 °F | 30.3 °F | 2.14 in. |
| March | 19.2 °F | 39.1 °F | 2.79 in. |
| April | 32.1 °F | 53.4 °F | 3.0 in. |
| May | 43.7 °F | 66.7 °F | 3.32 in. |
| June | 53.1 °F | 75.2 °F | 4.38 in. |
| July | 58.0 °F | 80.0 °F | 3.85 in. |
| August | 56.2 °F | 78.3 °F | 3.71 in. |
| September | 48.4 °F | 71.2 °F | 3.28 in. |
| October | 37.6 °F | 57.3 °F | 3.77 in. |
| November | 27.6 °F | 44.5 °F | 3.05 in. |
| December | 16.5 °F | 33.1 °F | 2.76 in. |
| Annual | 34.2 °F | 54.7 °F | 38.6 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |