Mount Pleasant, SC 29419 Frost Dates
29419, near Mount Pleasant, SC: the frost window
Around 03/13 is the usual last spring frost, about 197 days away. Fall's first freeze usually shows up around 11/30, roughly 262 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mount Pleasant in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Mount Pleasant's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/13 isn't a guarantee
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/30 and only about 1 year in 10 sees frost after that.
Mount Pleasant against the rest of the dataset
About 262 days separate Mount Pleasant's last and first frost, putting it 6,184 of 40,283 ZIP codes nationally. Within SC, it ranks 58 of 519.
Learn more
Two guides worth reading on 29419: local microclimates, on what one yard in Mount Pleasant can differ from the 29419 normal, and zone vs. frost date, on why Zone 9a and Mount Pleasant's frost date answer different questions.