Clemson, SC 29631 Frost Dates
Frost dates for Clemson, SC, ZIP 29631
The last spring frost here typically falls around 03/21, about 205 days from today. The first fall frost typically arrives around 11/11, about 236 frost-free days later.
Zone 8a (10 to 15°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 Clemson, not a forecast for this year.
What to do before the first frost
Zone 8a around Clemson 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 03/21 isn't a guarantee
03/21 is the middle of 30 years of NOAA records, not a promise. Plant by 03/01 and you're betting against frost in roughly 9 years out of 10. 04/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clemson compares
About 236 days separate Clemson's last and first frost, putting it 9,329 of 40,283 ZIP codes nationally. Within SC, it ranks 255 of 519.
Learn more
the frost range explains how to read the range around Clemson's dates instead of trusting one, and local microclimates explains what one yard in Clemson can differ from the 29631 normal.