Mexico, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.4 °C (low) to 13.5 °C (high). Annual precipitation averages 1218 Millimeters. Mexico is located in USDA Plant Hardiness Zone 5b. 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 | -9.7 °C | -0.7 °C | 115.32 mm |
| February | -9.1 °C | 0.3 °C | 88.14 mm |
| March | -4.9 °C | 4.8 °C | 86.11 mm |
| April | 1.3 °C | 12.6 °C | 92.46 mm |
| May | 7.7 °C | 19.8 °C | 92.71 mm |
| June | 12.8 °C | 24.3 °C | 94.49 mm |
| July | 15.9 °C | 26.7 °C | 93.47 mm |
| August | 15.3 °C | 26.2 °C | 96.52 mm |
| September | 11.2 °C | 22.4 °C | 101.09 mm |
| October | 5.6 °C | 15.2 °C | 128.02 mm |
| November | 0.1 °C | 8.4 °C | 113.03 mm |
| December | -5.3 °C | 2.3 °C | 116.59 mm |
| Annual | 3.4 °C | 13.5 °C | 1217.95 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 5b : -26.1°C to -23.3°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 |