Fort Loudon, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 17.6 °C (high). Annual precipitation averages 1120.9 Millimeters. Fort Loudon 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 | -5.5 °C | 4.2 °C | 75.44 mm |
| February | -4.8 °C | 6 °C | 62.99 mm |
| March | -0.8 °C | 10.7 °C | 93.47 mm |
| April | 4.6 °C | 17.8 °C | 98.3 mm |
| May | 9.9 °C | 22.8 °C | 113.79 mm |
| June | 14.8 °C | 27.7 °C | 110.24 mm |
| July | 17.5 °C | 30.3 °C | 95.76 mm |
| August | 16.4 °C | 29.2 °C | 101.85 mm |
| September | 12.4 °C | 25.4 °C | 103.89 mm |
| October | 6.1 °C | 18.8 °C | 99.82 mm |
| November | 0.8 °C | 12.3 °C | 79.76 mm |
| December | -3.2 °C | 6.2 °C | 85.6 mm |
| Annual | 5.7 °C | 17.6 °C | 1120.91 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 |