Mount Pleasant, SC 29415 Frost Dates
29415, near Mount Pleasant, SC: the frost window
The last spring frost here typically falls around 03/13, about 197 days from today. Fall's first freeze usually shows up around 11/30, roughly 262 days after the last spring frost.
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.
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.
How much risk comes with planting early here
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
At roughly 262 frost-free days, Mount Pleasant places 6,181 of 40,283 ZIP codes in this dataset. Within SC, it ranks 55 of 519.
Learn more
Two guides worth reading on 29415: the frost range, on how to read the range around Mount Pleasant's dates instead of trusting one, and local microclimates, on what one yard in Mount Pleasant can differ from the 29415 normal.