National Weather Service United States Department of Commerce



Image of 10 percent date of first frost

The above image shows the date by which the first 32 degree temperature will occur in 10 percent of the years. This would represent an unusually early end to the growing season. The dates range from mid to late August in Tucker County, to early and mid September across much of the northern mountains and the panhandles. The dates fall from late September to early October across the rest of the Charleston forecast area.

Image of 50 percent date of first frost

The above image shows the date by which the first 32 degree temperature will occur in 50 percent of the years. In other words, this map represents the average date of the first freezing temperature. This date ranges from mid September in eastern Tucker and Randolph counties, to late September across the rest of the northern mountain area of West Virginia. The first freezing temperature usually occurs by early October in the rest of eastern and north central West Virginia, to mid and late October across southwest West Virginia, southeast Ohio, and extreme southwest Virginia.

Image of 90 percent date of first frost

The above image shows the date by which the first 32 degree temperature will occur in 90 percent of the years. In other words, the first freezing temperature almost always occurs by these dates. The dates range from early October in the extreme northern mountain area of West Virginia, to mid October across the rest of eastern West Virginia, as well as the northern panhandle and southeast Ohio. The first freezing temperature almost always occurs by early November across the rest of West Virginia, northeast Kentucky, and extreme southwestern Virginia.