Mount Pleasant, SC 29416 Frost Dates
When can you plant in Mount Pleasant, SC?
Around 03/13 is the usual last spring frost, about 197 days away. The first fall frost typically arrives around 11/30, about 262 frost-free days later.
Zone 9a (20 to 25°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 Mount Pleasant, not a forecast for this year.
What to do before the first frost
About 13 weeks of growing season left in Mount Pleasant before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
03/13 is the middle of 30 years of NOAA records, not a promise. Plant by 02/19 and you're betting against frost in roughly 9 years out of 10. 03/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mount Pleasant compares
Mount Pleasant's growing season runs about 262 days, ranking 6,182 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 56 of 519.
Learn more
zone vs. frost date covers why Zone 9a and Mount Pleasant's frost date answer different questions. the frost range covers how to read the range around Mount Pleasant's dates instead of trusting one.