Lacona, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 13 °C (high). Annual precipitation averages 1296.4 Millimeters. Lacona 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 | -10.8 °C | -1.4 °C | 126.24 mm |
| February | -10.3 °C | -0.3 °C | 94.49 mm |
| March | -5.8 °C | 4.3 °C | 83.82 mm |
| April | 0.7 °C | 12.2 °C | 96.77 mm |
| May | 7.2 °C | 19.4 °C | 97.79 mm |
| June | 12.2 °C | 23.8 °C | 98.81 mm |
| July | 15.3 °C | 26.2 °C | 93.73 mm |
| August | 14.6 °C | 25.7 °C | 104.65 mm |
| September | 10.6 °C | 22.1 °C | 113.28 mm |
| October | 4.9 °C | 14.9 °C | 137.92 mm |
| November | -0.7 °C | 7.9 °C | 119.13 mm |
| December | -6.3 °C | 1.7 °C | 129.79 mm |
| Annual | 2.6 °C | 13 °C | 1296.42 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |