Rock Hill, SC 29730 Frost Dates
Frost dates for Rock Hill, SC, ZIP 29730
The last spring frost here typically falls around 03/27, about 211 days from today. The first fall frost typically arrives around 11/05, about 225 frost-free days later.
Rock Hill 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 Rock Hill 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.
How much risk comes with planting early here
03/27 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 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 Rock Hill compares
Rock Hill's growing season runs about 225 days, ranking 11,344 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 373 of 519.
Learn more
local microclimates explains what one yard in Rock Hill can differ from the 29730 normal, and zone vs. frost date explains why Zone 8a and Rock Hill's frost date answer different questions.