Charleston, WV 25317 Frost Dates
Frost dates for Charleston, WV, ZIP 25317
Around 04/16 is the usual last spring frost, about 231 days away. The first fall frost typically arrives around 10/26, about 192 frost-free days later.
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 Charleston, not a forecast for this year.
What to do before the first frost
Zone 7a around Charleston has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Charleston compares
At roughly 192 frost-free days, Charleston places 20,155 of 40,283 ZIP codes in this dataset. Within WV, it ranks 241 of 885.
Learn more
the frost range explains how to read the range around Charleston's dates instead of trusting one, and local microclimates explains what one yard in Charleston can differ from the 25317 normal.