Walterboro, SC 29488 Frost Dates
Frost dates for Walterboro, SC, ZIP 29488
Typically, the last spring freeze lands around 03/23, roughly 207 days out. The first fall frost typically arrives around 11/06, about 233 frost-free days later.
The USDA Plant Hardiness Zone Map puts Walterboro in Zone 8b (15 to 20°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 8b around Walterboro has about 10 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.
The actual range around Walterboro's last frost
03/23 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Walterboro compares
At roughly 233 frost-free days, Walterboro places 9,893 of 40,283 ZIP codes in this dataset. Within SC, it ranks 286 of 519.
Learn more
zone vs. frost date explains why Zone 8b and Walterboro's frost date answer different questions, and the frost range explains how to read the range around Walterboro's dates instead of trusting one.