Williamson, WV 41519 Frost Dates
Frost dates for Williamson, WV, ZIP 41519
The last spring frost here typically falls around 04/20, about 235 days from today. The first fall frost typically arrives around 10/24, about 186 frost-free days later.
The USDA Plant Hardiness Zone Map puts Williamson in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's 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
About 186 days separate Williamson's last and first frost, putting it 22,833 of 40,283 ZIP codes nationally. Within WV, it ranks 356 of 885.
Learn more
the frost range explains how to read the range around Williamson's dates instead of trusting one, and local microclimates explains what one yard in Williamson can differ from the 41519 normal.