According to the 2023 USDA Hardiness Zone Map Moundsville, West Virginia is in Zones 6b (-5°F to 0°F) and 6b (-5°F to 0°F). This is a change from the 2012 USDA Hardiness Zone Map which has Moundsville in Zones 6a (-10°F to -5°F) and 6b (-5°F to 0°F).