York, SC 29703 Frost Dates
Frost dates for York, SC, ZIP 29703
Typically, the last spring freeze lands around 03/31, roughly 215 days out. The first fall frost typically arrives around 11/04, about 218 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 York, not a forecast for this year.
What to do before the first frost
Zone 8a around York 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.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/13 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How York compares
About 218 days separate York's last and first frost, putting it 13,240 of 40,283 ZIP codes nationally. Within SC, it ranks 439 of 519.
Learn more
the frost range explains how to read the range around York's dates instead of trusting one, and local microclimates explains what one yard in York can differ from the 29703 normal.