Amherstdale, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.3 °F (low) to 66.5 °F (high). Annual precipitation averages 50.9 Inches. Amherstdale is located in USDA Plant Hardiness Zone 7a. 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 | 24.6 °F | 43.3 °F | 3.78 in. |
| February | 27.2 °F | 47.7 °F | 3.56 in. |
| March | 33.1 °F | 56.6 °F | 4.35 in. |
| April | 42.3 °F | 69.0 °F | 4.64 in. |
| May | 52.2 °F | 76.2 °F | 5.28 in. |
| June | 60.6 °F | 83.0 °F | 5.05 in. |
| July | 64.6 °F | 85.9 °F | 5.92 in. |
| August | 63.6 °F | 84.9 °F | 4.38 in. |
| September | 56.9 °F | 79.8 °F | 3.53 in. |
| October | 44.5 °F | 68.6 °F | 3.14 in. |
| November | 33.8 °F | 56.6 °F | 3.12 in. |
| December | 28.7 °F | 46.6 °F | 4.18 in. |
| Annual | 44.3 °F | 66.5 °F | 50.93 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Cfa - Humid Subtropical Climate |