Fort Mill, SC 29715 Frost Dates
Frost dates for Fort Mill, SC, ZIP 29715
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/04, about 218 frost-free days later.
Fort Mill sits in USDA Zone 8a (10 to 15°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.
What to do before the first frost
Zone 8a around Fort Mill 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 Fort Mill's last frost
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 Fort Mill compares
About 218 days separate Fort Mill's last and first frost, putting it 13,194 of 40,283 ZIP codes nationally. Within SC, it ranks 436 of 519.
Learn more
the frost range explains how to read the range around Fort Mill's dates instead of trusting one, and local microclimates explains what one yard in Fort Mill can differ from the 29715 normal.