Mayville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.2 °C (low) to 13.4 °C (high). Annual precipitation averages 1226.1 Millimeters. Mayville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | -0.6 °C | 91.44 mm |
| February | -8.7 °C | 0.6 °C | 67.06 mm |
| March | -4.8 °C | 5.4 °C | 76.2 mm |
| April | 1.2 °C | 12.9 °C | 92.2 mm |
| May | 7.4 °C | 19.3 °C | 104.65 mm |
| June | 12.4 °C | 24 °C | 108.46 mm |
| July | 15 °C | 26.1 °C | 123.44 mm |
| August | 14.2 °C | 25.4 °C | 98.81 mm |
| September | 10.7 °C | 21.9 °C | 123.19 mm |
| October | 4.8 °C | 15.2 °C | 138.43 mm |
| November | -0.4 °C | 8.2 °C | 104.39 mm |
| December | -4.8 °C | 2.2 °C | 97.79 mm |
| Annual | 3.2 °C | 13.4 °C | 1226.06 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |