Homer, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.9 °F (low) to 55.9 °F (high). Annual precipitation averages 43.1 Inches. Homer 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 | 14.2 °F | 30.8 °F | 3.01 in. |
| February | 15.5 °F | 32.9 °F | 2.62 in. |
| March | 22.3 °F | 40.5 °F | 3.34 in. |
| April | 33.9 °F | 54.0 °F | 3.61 in. |
| May | 45.0 °F | 67.0 °F | 3.41 in. |
| June | 54.2 °F | 75.2 °F | 4.41 in. |
| July | 58.5 °F | 79.6 °F | 4.22 in. |
| August | 57.1 °F | 78.3 °F | 3.64 in. |
| September | 49.7 °F | 71.5 °F | 4.04 in. |
| October | 39.4 °F | 58.7 °F | 3.95 in. |
| November | 30.8 °F | 46.6 °F | 3.32 in. |
| December | 21.7 °F | 35.8 °F | 3.57 in. |
| Annual | 36.9 °F | 55.9 °F | 43.14 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 |