Bartow, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.6 °F (low) to 58.9 °F (high). Annual precipitation averages 44.1 Inches. Bartow is located in USDA Plant Hardiness Zone 6a. 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 | 17.4 °F | 36.3 °F | 3.54 in. |
| February | 19.4 °F | 39.6 °F | 3.03 in. |
| March | 25.8 °F | 48.1 °F | 3.94 in. |
| April | 34.6 °F | 60.5 °F | 3.74 in. |
| May | 44.4 °F | 68.0 °F | 4.94 in. |
| June | 52.3 °F | 74.9 °F | 3.94 in. |
| July | 55.9 °F | 78.3 °F | 4.29 in. |
| August | 54.9 °F | 77.5 °F | 3.65 in. |
| September | 48.1 °F | 72.2 °F | 3.55 in. |
| October | 37.0 °F | 61.5 °F | 2.95 in. |
| November | 27.5 °F | 49.4 °F | 2.92 in. |
| December | 21.6 °F | 40.5 °F | 3.56 in. |
| Annual | 36.6 °F | 58.9 °F | 44.05 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |