Sumter, SC 29152 Frost Dates
29152, near Sumter, SC: the frost window
Around 03/21 is the usual last spring frost, about 205 days away. Fall's first freeze usually shows up around 11/13, roughly 239 days after the last spring frost.
Zone 8b (15 to 20°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 Sumter, not a forecast for this year.
Stretching the season past the first frost
Sumter's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Sumter's last frost
03/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Sumter against the rest of the dataset
At roughly 239 frost-free days, Sumter places 8,772 of 40,283 ZIP codes in this dataset. Within SC, it ranks 195 of 519.
Learn more
Two guides worth reading on 29152: the frost range, on how to read the range around Sumter's dates instead of trusting one, and local microclimates, on what one yard in Sumter can differ from the 29152 normal.