Fayette, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.1 °C (low) to 15.3 °C (high). Annual precipitation averages 939.8 Millimeters. Fayette is located in USDA Plant Hardiness Zone 6a. 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 | -8.3 °C | 0.1 °C | 60.2 mm |
| February | -7.7 °C | 1.8 °C | 52.32 mm |
| March | -3.1 °C | 7.6 °C | 65.02 mm |
| April | 2.7 °C | 15.2 °C | 86.87 mm |
| May | 9.2 °C | 21.7 °C | 105.92 mm |
| June | 14.7 °C | 27 °C | 97.79 mm |
| July | 16.4 °C | 29.1 °C | 91.44 mm |
| August | 15.3 °C | 27.9 °C | 94.74 mm |
| September | 10.9 °C | 24.5 °C | 78.99 mm |
| October | 4.9 °C | 17.2 °C | 71.88 mm |
| November | -0.6 °C | 9.3 °C | 76.2 mm |
| December | -5.2 °C | 2.7 °C | 58.42 mm |
| Annual | 4.1 °C | 15.3 °C | 939.79 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |