Fayetteville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 16.9 °C (high). Annual precipitation averages 1124.5 Millimeters. Fayetteville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.3 °C | 3.3 °C | 84.33 mm |
| February | -4.6 °C | 5.2 °C | 65.53 mm |
| March | -0.7 °C | 9.9 °C | 96.27 mm |
| April | 5.1 °C | 17.1 °C | 99.82 mm |
| May | 10.6 °C | 22.4 °C | 108.97 mm |
| June | 15.6 °C | 27.2 °C | 106.17 mm |
| July | 18 °C | 29.5 °C | 97.03 mm |
| August | 17.1 °C | 28.4 °C | 95 mm |
| September | 13.2 °C | 24.7 °C | 108.71 mm |
| October | 6.9 °C | 18.2 °C | 96.01 mm |
| November | 1.5 °C | 11.7 °C | 77.72 mm |
| December | -2.7 °C | 5.7 °C | 88.9 mm |
| Annual | 6.2 °C | 16.9 °C | 1124.46 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |