South Charleston, WV 25309 Frost Dates
25309, near South Charleston, WV: the frost window
The last spring frost here typically falls around 04/23, about 238 days from today. Fall's first freeze usually shows up around 10/20, roughly 180 days after the last spring frost.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for South Charleston, not a forecast for this year.
Stretching the season past the first frost
South Charleston's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
South Charleston against the rest of the dataset
About 180 days separate South Charleston's last and first frost, putting it 24,806 of 40,283 ZIP codes nationally. Within WV, it ranks 459 of 885.
Learn more
Two guides worth reading on 25309: the frost range, on how to read the range around South Charleston's dates instead of trusting one, and local microclimates, on what one yard in South Charleston can differ from the 25309 normal.