Matewan, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.4 °C (low) to 19.8 °C (high). Annual precipitation averages 1232.4 Millimeters. Matewan 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 | -3.6 °C | 6.9 °C | 91.69 mm |
| February | -2.2 °C | 9.3 °C | 93.22 mm |
| March | 1.2 °C | 14.3 °C | 115.82 mm |
| April | 6.6 °C | 21.2 °C | 103.38 mm |
| May | 11.8 °C | 25.2 °C | 120.14 mm |
| June | 16.4 °C | 28.9 °C | 118.36 mm |
| July | 18.4 °C | 30.7 °C | 142.49 mm |
| August | 17.9 °C | 30.2 °C | 100.33 mm |
| September | 14.3 °C | 27.2 °C | 85.6 mm |
| October | 7.6 °C | 20.9 °C | 75.95 mm |
| November | 1.8 °C | 14.4 °C | 75.95 mm |
| December | -1.2 °C | 8.9 °C | 109.47 mm |
| Annual | 7.4 °C | 19.8 °C | 1232.4 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |