Williston, SC 29853 Frost Dates
Frost dates for Williston, SC, ZIP 29853
Typically, the last spring freeze lands around 03/20, roughly 204 days out. The first fall frost typically arrives around 11/13, about 238 frost-free days later.
Zone 8b (15 to 20°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 Williston, not a forecast for this year.
What to do before the first frost
Zone 8b around Williston has about 11 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 03/20 isn't a guarantee
03/20 is the middle of 30 years of NOAA records, not a promise. Plant by 02/27 and you're betting against frost in roughly 9 years out of 10. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Williston compares
At roughly 238 frost-free days, Williston places 8,976 of 40,283 ZIP codes in this dataset. Within SC, it ranks 217 of 519.
Learn more
the frost range explains how to read the range around Williston's dates instead of trusting one, and local microclimates explains what one yard in Williston can differ from the 29853 normal.