Earlville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 57.3 °F (high). Annual precipitation averages 43.2 Inches. Earlville is located in USDA Plant Hardiness Zone 5b. 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 | 12.6 °F | 31.4 °F | 2.87 in. |
| February | 13.8 °F | 34.1 °F | 2.53 in. |
| March | 20.8 °F | 42.3 °F | 3.21 in. |
| April | 32.8 °F | 55.9 °F | 3.34 in. |
| May | 43.9 °F | 68.8 °F | 3.64 in. |
| June | 53.0 °F | 77.1 °F | 4.59 in. |
| July | 57.5 °F | 81.2 °F | 4.37 in. |
| August | 56.1 °F | 79.8 °F | 4.31 in. |
| September | 48.8 °F | 73.0 °F | 3.85 in. |
| October | 38.5 °F | 60.1 °F | 3.88 in. |
| November | 28.9 °F | 47.2 °F | 3.15 in. |
| December | 20.6 °F | 36.4 °F | 3.48 in. |
| Annual | 35.6 °F | 57.3 °F | 43.22 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |