Lysander, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.2 °F (low) to 56.8 °F (high). Annual precipitation averages 44.2 Inches. Lysander is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.1 °F | 31.0 °F | 3.47 in. |
| February | 16.0 °F | 33.1 °F | 2.87 in. |
| March | 23.4 °F | 41.0 °F | 3.16 in. |
| April | 34.7 °F | 55.2 °F | 3.54 in. |
| May | 46.3 °F | 68.3 °F | 3.61 in. |
| June | 55.2 °F | 76.2 °F | 3.94 in. |
| July | 60.0 °F | 80.7 °F | 3.96 in. |
| August | 58.7 °F | 79.5 °F | 3.89 in. |
| September | 51.8 °F | 72.7 °F | 3.76 in. |
| October | 41.7 °F | 59.4 °F | 4.46 in. |
| November | 32.3 °F | 47.7 °F | 3.77 in. |
| December | 22.9 °F | 36.5 °F | 3.73 in. |
| Annual | 38.2 °F | 56.8 °F | 44.16 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |