Summerville, SC 29484 Frost Dates
When can you plant in Summerville, SC?
Typically, the last spring freeze lands around 03/22, roughly 206 days out. The first fall frost typically arrives around 11/12, about 238 frost-free days later.
The USDA Plant Hardiness Zone Map puts Summerville 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
About 11 weeks of growing season left in Summerville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/22 isn't a guarantee
03/22 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 Summerville compares
About 238 days separate Summerville's last and first frost, putting it 8,930 of 40,283 ZIP codes nationally. Within SC, it ranks 210 of 519.
Learn more
local microclimates covers what one yard in Summerville can differ from the 29484 normal. zone vs. frost date covers why Zone 8b and Summerville's frost date answer different questions.