McConnellsburg, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 17.2 °C (high). Annual precipitation averages 1064.8 Millimeters. McConnellsburg is located in USDA Plant Hardiness Zone 7a. 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 | -6.1 °C | 3.7 °C | 69.85 mm |
| February | -5.3 °C | 5.5 °C | 59.44 mm |
| March | -1.5 °C | 10.3 °C | 87.63 mm |
| April | 4 °C | 17.6 °C | 92.71 mm |
| May | 9.4 °C | 22.7 °C | 114.55 mm |
| June | 14.2 °C | 27.3 °C | 107.95 mm |
| July | 16.7 °C | 29.7 °C | 91.44 mm |
| August | 15.6 °C | 28.7 °C | 82.04 mm |
| September | 11.7 °C | 25 °C | 98.3 mm |
| October | 5.4 °C | 18.6 °C | 100.58 mm |
| November | 0.3 °C | 11.8 °C | 79.25 mm |
| December | -3.6 °C | 5.8 °C | 81.03 mm |
| Annual | 5.1 °C | 17.2 °C | 1064.77 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |