Williamson, WV 41567 Frost Dates
Williamson, WV: when does the frost end?
Typically, the last spring freeze lands around 04/21, roughly 236 days out. Fall's first freeze usually shows up around 10/26, roughly 189 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 8 weeks until Williamson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Williamson against the rest of the dataset
At roughly 189 frost-free days, Williamson places 21,590 of 40,283 ZIP codes in this dataset. Within WV, it ranks 318 of 885.
Learn more
Before leaning on 41567's figures: zone vs. frost date explains why Zone 7a and Williamson's frost date answer different questions, while the frost range explains how to read the range around Williamson's dates instead of trusting one.