Lyons, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.3 °C (low) to 14.4 °C (high). Annual precipitation averages 951.2 Millimeters. Lyons is located in USDA Plant Hardiness Zone 6b. 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 | -7.8 °C | 0.4 °C | 69.34 mm |
| February | -7.3 °C | 1.3 °C | 54.86 mm |
| March | -3.6 °C | 5.9 °C | 68.33 mm |
| April | 2.2 °C | 13.3 °C | 75.44 mm |
| May | 8.3 °C | 20.4 °C | 82.8 mm |
| June | 13.6 °C | 25.1 °C | 88.9 mm |
| July | 16.3 °C | 27.7 °C | 91.19 mm |
| August | 15.5 °C | 27.1 °C | 92.2 mm |
| September | 11.8 °C | 22.8 °C | 84.07 mm |
| October | 5.9 °C | 15.9 °C | 94.23 mm |
| November | 0.6 °C | 9.2 °C | 77.72 mm |
| December | -4.2 °C | 3.2 °C | 72.14 mm |
| Annual | 4.3 °C | 14.4 °C | 951.22 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |