Pennsboro, West Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.5 °F (low) to 64.5 °F (high). Annual precipitation averages 47 Inches. Pennsboro is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.3 °F | 40.0 °F | 3.38 in. |
| February | 23.1 °F | 43.9 °F | 3.25 in. |
| March | 29.5 °F | 53.4 °F | 4.22 in. |
| April | 39.6 °F | 66.7 °F | 3.82 in. |
| May | 49.7 °F | 74.6 °F | 4.85 in. |
| June | 58.3 °F | 81.7 °F | 4.69 in. |
| July | 62.6 °F | 84.8 °F | 5.16 in. |
| August | 60.9 °F | 83.9 °F | 4.07 in. |
| September | 53.8 °F | 78.6 °F | 3.6 in. |
| October | 41.4 °F | 66.8 °F | 3.2 in. |
| November | 31.6 °F | 54.9 °F | 3.14 in. |
| December | 25.9 °F | 44.4 °F | 3.58 in. |
| Annual | 41.5 °F | 64.5 °F | 46.96 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |