McGraw, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.6 °F (low) to 55.6 °F (high). Annual precipitation averages 45.7 Inches. McGraw 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 30.3 °F | 3.1 in. |
| February | 15.1 °F | 32.4 °F | 2.69 in. |
| March | 22.1 °F | 40.2 °F | 3.42 in. |
| April | 33.9 °F | 53.8 °F | 3.84 in. |
| May | 44.9 °F | 66.7 °F | 3.81 in. |
| June | 53.9 °F | 74.9 °F | 4.67 in. |
| July | 58.4 °F | 79.3 °F | 4.41 in. |
| August | 56.8 °F | 78.0 °F | 4.19 in. |
| September | 49.6 °F | 71.2 °F | 4.25 in. |
| October | 39.3 °F | 58.4 °F | 4.21 in. |
| November | 30.4 °F | 46.3 °F | 3.53 in. |
| December | 21.3 °F | 35.4 °F | 3.56 in. |
| Annual | 36.6 °F | 55.6 °F | 45.68 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |