Peru, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.4 °C (low) to 12.8 °C (high). Annual precipitation averages 824.5 Millimeters. Peru is located in USDA Plant Hardiness Zone 5a. 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 | -12.5 °C | -2.6 °C | 46.74 mm |
| February | -11.5 °C | -0.9 °C | 42.16 mm |
| March | -6.1 °C | 4.1 °C | 54.36 mm |
| April | 1.1 °C | 11.9 °C | 67.06 mm |
| May | 7.8 °C | 19.5 °C | 71.37 mm |
| June | 13.1 °C | 24.3 °C | 102.87 mm |
| July | 15.9 °C | 26.9 °C | 83.06 mm |
| August | 14.9 °C | 26.1 °C | 80.01 mm |
| September | 10.6 °C | 22 °C | 68.58 mm |
| October | 4.3 °C | 14.3 °C | 86.11 mm |
| November | -1.4 °C | 7.4 °C | 65.02 mm |
| December | -7.6 °C | 1 °C | 57.15 mm |
| Annual | 2.4 °C | 12.8 °C | 824.49 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 5a : -28.9°C to -26.1°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 |