Le Roy, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.3 °F (low) to 57.1 °F (high). Annual precipitation averages 36.3 Inches. Le Roy is located in USDA Plant Hardiness Zone 6a. 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 | 16.1 °F | 31.9 °F | 2.44 in. |
| February | 16.7 °F | 33.6 °F | 1.86 in. |
| March | 23.7 °F | 41.9 °F | 2.57 in. |
| April | 34.6 °F | 55.3 °F | 3.05 in. |
| May | 46.3 °F | 68.1 °F | 3.16 in. |
| June | 55.7 °F | 76.6 °F | 3.6 in. |
| July | 60.1 °F | 80.5 °F | 3.77 in. |
| August | 58.5 °F | 79.3 °F | 3.46 in. |
| September | 51.5 °F | 72.8 °F | 3.36 in. |
| October | 41.4 °F | 60.2 °F | 3.57 in. |
| November | 31.7 °F | 47.8 °F | 2.79 in. |
| December | 23.1 °F | 37.1 °F | 2.65 in. |
| Annual | 38.3 °F | 57.1 °F | 36.28 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 6a : -10°F to -5°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 |