Greig, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.5 °F (low) to 52.9 °F (high). Annual precipitation averages 50.3 Inches. Greig is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.7 °F | 26.6 °F | 3.97 in. |
| February | 7.7 °F | 29.1 °F | 3.13 in. |
| March | 16.3 °F | 37.5 °F | 3.29 in. |
| April | 30.1 °F | 51.2 °F | 3.78 in. |
| May | 42.2 °F | 65.1 °F | 4.3 in. |
| June | 51.5 °F | 72.7 °F | 4.77 in. |
| July | 56.0 °F | 76.9 °F | 4.33 in. |
| August | 54.5 °F | 75.8 °F | 4.44 in. |
| September | 47.1 °F | 69.0 °F | 4.41 in. |
| October | 36.6 °F | 55.9 °F | 5.33 in. |
| November | 26.5 °F | 43.2 °F | 4.22 in. |
| December | 15.3 °F | 31.9 °F | 4.3 in. |
| Annual | 32.5 °F | 52.9 °F | 50.27 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 |