Peru, Maine has a Subarctic With Cool Summers And Year Around Rainfall climate (Köppen classification: Dfc). Average annual temperatures range from 33 °F (low) to 53.1 °F (high). Annual precipitation averages 49.7 Inches. 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 | 8.2 °F | 26.1 °F | 3.34 in. |
| February | 9.3 °F | 29.4 °F | 2.88 in. |
| March | 18.7 °F | 38.1 °F | 3.51 in. |
| April | 30.5 °F | 51.0 °F | 4.34 in. |
| May | 41.7 °F | 64.5 °F | 4.0 in. |
| June | 51.0 °F | 72.9 °F | 5.37 in. |
| July | 56.3 °F | 77.9 °F | 4.24 in. |
| August | 54.4 °F | 76.7 °F | 4.24 in. |
| September | 46.7 °F | 69.3 °F | 3.61 in. |
| October | 36.5 °F | 55.8 °F | 5.6 in. |
| November | 26.9 °F | 43.2 °F | 4.41 in. |
| December | 16.3 °F | 32.0 °F | 4.19 in. |
| Annual | 33 °F | 53.1 °F | 49.73 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfc - Subarctic With Cool Summers And Year Around Rainfall |