Rupert, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.3 °F (low) to 60.7 °F (high). Annual precipitation averages 49.6 Inches. Rupert is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.1 °F | 39.5 °F | 3.92 in. |
| February | 20.1 °F | 42.5 °F | 3.57 in. |
| March | 27.0 °F | 50.8 °F | 4.61 in. |
| April | 36.2 °F | 62.0 °F | 4.21 in. |
| May | 45.8 °F | 70.2 °F | 5.17 in. |
| June | 54.1 °F | 76.2 °F | 4.94 in. |
| July | 58.1 °F | 79.5 °F | 5.27 in. |
| August | 57.3 °F | 78.5 °F | 3.74 in. |
| September | 50.6 °F | 73.3 °F | 3.68 in. |
| October | 38.9 °F | 63.2 °F | 3.08 in. |
| November | 28.9 °F | 51.3 °F | 3.21 in. |
| December | 22.9 °F | 41.1 °F | 4.22 in. |
| Annual | 38.3 °F | 60.7 °F | 49.62 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |