Williamson, WV 41571 Frost Dates
When can you plant in Williamson, WV?
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
About 8 weeks of growing season left in Williamson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
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 22,837 of 40,283 ZIP codes nationally. Within WV, it ranks 360 of 885.
Learn more
local microclimates covers what one yard in Williamson can differ from the 41571 normal. zone vs. frost date covers why Zone 7a and Williamson's frost date answer different questions.