Ligonier, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 16.2 °C (high). Annual precipitation averages 1241.6 Millimeters. Ligonier is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.8 °C | 2.7 °C | 94.74 mm |
| February | -6.3 °C | 4.3 °C | 80.52 mm |
| March | -2.3 °C | 9.3 °C | 101.35 mm |
| April | 3.3 °C | 16.5 °C | 108.2 mm |
| May | 9 °C | 21.9 °C | 119.13 mm |
| June | 13.8 °C | 26.1 °C | 128.52 mm |
| July | 15.9 °C | 28.1 °C | 124.46 mm |
| August | 15 °C | 27.6 °C | 104.65 mm |
| September | 11.1 °C | 24 °C | 103.38 mm |
| October | 4.7 °C | 17.4 °C | 89.15 mm |
| November | -0.2 °C | 10.9 °C | 92.2 mm |
| December | -3.8 °C | 5.2 °C | 95.25 mm |
| Annual | 4.5 °C | 16.2 °C | 1241.55 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |