Parkersburg, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 42.3 °F (low) to 65 °F (high). Annual precipitation averages 44 Inches. Parkersburg is located in USDA Plant Hardiness Zone 6b. 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 | 21.8 °F | 40.1 °F | 3.29 in. |
| February | 23.4 °F | 43.8 °F | 2.96 in. |
| March | 30.0 °F | 53.2 °F | 3.92 in. |
| April | 40.3 °F | 67.1 °F | 3.8 in. |
| May | 50.6 °F | 75.3 °F | 4.42 in. |
| June | 59.5 °F | 82.8 °F | 4.67 in. |
| July | 63.4 °F | 86.0 °F | 4.7 in. |
| August | 62.2 °F | 85.3 °F | 3.53 in. |
| September | 54.7 °F | 79.1 °F | 3.4 in. |
| October | 42.4 °F | 67.7 °F | 2.93 in. |
| November | 32.7 °F | 55.2 °F | 2.98 in. |
| December | 26.8 °F | 44.5 °F | 3.39 in. |
| Annual | 42.3 °F | 65 °F | 43.99 in. |
| 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |