Temperature for 10 days South Fork Blackwater River Watershed Dam A-21, F° Atmospheric pressure for 10 days in South Fork Blackwater River Watershed Dam A-21, hPa Precipitation for 10 days in South Fork Blackwater River Watershed Dam A-21, inch Wind for 10 days in South Fork Blackwater River Watershed Dam A-21, mph 24-hour meteogram South Fork Blackwater River Watershed Dam A-21