Peru, Maine has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 0.6 °C (low) to 11.7 °C (high). Annual precipitation averages 1263.2 Millimeters. Peru is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.2 °C | -3.3 °C | 84.84 mm |
| February | -12.6 °C | -1.4 °C | 73.15 mm |
| March | -7.4 °C | 3.4 °C | 89.15 mm |
| April | -0.8 °C | 10.6 °C | 110.24 mm |
| May | 5.4 °C | 18.1 °C | 101.6 mm |
| June | 10.6 °C | 22.7 °C | 136.4 mm |
| July | 13.5 °C | 25.5 °C | 107.7 mm |
| August | 12.4 °C | 24.8 °C | 107.7 mm |
| September | 8.2 °C | 20.7 °C | 91.69 mm |
| October | 2.5 °C | 13.2 °C | 142.24 mm |
| November | -2.8 °C | 6.2 °C | 112.01 mm |
| December | -8.7 °C | 0 °C | 106.43 mm |
| Annual | 0.6 °C | 11.7 °C | 1263.15 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 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 | Dfc - Subarctic With Cool Summers And Year Around Rainfall |