Williamson, WV 41564 Frost Dates
Frost dates for Williamson, WV, ZIP 41564
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/24, about 186 frost-free days later.
Williamson sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 7a around Williamson 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 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Williamson compares
At roughly 186 frost-free days, Williamson places 22,836 of 40,283 ZIP codes in this dataset. Within WV, it ranks 359 of 885.
Learn more
local microclimates explains what one yard in Williamson can differ from the 41564 normal, and zone vs. frost date explains why Zone 7a and Williamson's frost date answer different questions.