Fayette, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 12.1 °C (high). Annual precipitation averages 1233.9 Millimeters. Fayette is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.1 °C | -2.8 °C | 87.88 mm |
| February | -12.4 °C | -1.2 °C | 79.25 mm |
| March | -7 °C | 3.7 °C | 91.44 mm |
| April | -0.3 °C | 11.1 °C | 105.92 mm |
| May | 5.8 °C | 18.2 °C | 92.96 mm |
| June | 10.9 °C | 22.8 °C | 127 mm |
| July | 13.9 °C | 25.8 °C | 102.36 mm |
| August | 12.9 °C | 25.4 °C | 93.22 mm |
| September | 8.5 °C | 21.3 °C | 93.22 mm |
| October | 2.7 °C | 13.8 °C | 139.45 mm |
| November | -2.7 °C | 6.8 °C | 109.73 mm |
| December | -8.5 °C | 0.6 °C | 111.51 mm |
| Annual | 0.9 °C | 12.1 °C | 1233.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |