Huntingdon, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.5 °C (low) to 16.9 °C (high). Annual precipitation averages 1033.8 Millimeters. Huntingdon 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.8 °C | 2.9 °C | 71.12 mm |
| February | -6.2 °C | 4.8 °C | 57.4 mm |
| March | -2.5 °C | 9.6 °C | 82.3 mm |
| April | 2.9 °C | 17.1 °C | 90.17 mm |
| May | 8.7 °C | 22.7 °C | 103.63 mm |
| June | 13.9 °C | 27.2 °C | 98.3 mm |
| July | 16.2 °C | 29.6 °C | 98.04 mm |
| August | 15.3 °C | 28.7 °C | 92.96 mm |
| September | 11.3 °C | 24.8 °C | 97.28 mm |
| October | 4.9 °C | 18.2 °C | 88.65 mm |
| November | -0.2 °C | 11.5 °C | 76.45 mm |
| December | -3.9 °C | 5.2 °C | 77.47 mm |
| Annual | 4.5 °C | 16.9 °C | 1033.77 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |