Parish, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.2 °F (low) to 56.5 °F (high). Annual precipitation averages 48.3 Inches. Parish is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.7 °F | 30.5 °F | 4.55 in. |
| February | 14.8 °F | 32.6 °F | 3.47 in. |
| March | 22.6 °F | 40.6 °F | 3.47 in. |
| April | 34.0 °F | 55.2 °F | 3.7 in. |
| May | 45.4 °F | 68.2 °F | 3.83 in. |
| June | 54.3 °F | 76.2 °F | 3.9 in. |
| July | 59.1 °F | 80.5 °F | 3.84 in. |
| August | 57.7 °F | 79.2 °F | 3.78 in. |
| September | 50.7 °F | 72.5 °F | 4.09 in. |
| October | 40.7 °F | 59.4 °F | 4.87 in. |
| November | 31.6 °F | 47.1 °F | 4.34 in. |
| December | 21.9 °F | 36.1 °F | 4.49 in. |
| Annual | 37.2 °F | 56.5 °F | 48.33 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |