McConnellsburg, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.1 °F (low) to 63 °F (high). Annual precipitation averages 41.9 Inches. 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 | 21.1 °F | 38.7 °F | 2.75 in. |
| February | 22.4 °F | 41.9 °F | 2.34 in. |
| March | 29.3 °F | 50.5 °F | 3.45 in. |
| April | 39.2 °F | 63.7 °F | 3.65 in. |
| May | 49.0 °F | 72.9 °F | 4.51 in. |
| June | 57.5 °F | 81.1 °F | 4.25 in. |
| July | 62.0 °F | 85.5 °F | 3.6 in. |
| August | 60.1 °F | 83.7 °F | 3.23 in. |
| September | 53.0 °F | 77.0 °F | 3.87 in. |
| October | 41.8 °F | 65.4 °F | 3.96 in. |
| November | 32.5 °F | 53.3 °F | 3.12 in. |
| December | 25.6 °F | 42.4 °F | 3.19 in. |
| Annual | 41.1 °F | 63 °F | 41.92 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |