Sumter, SC 29062 Frost Dates
29062, near Sumter, SC: the frost window
The last spring frost here typically falls around 03/21, about 205 days from today. Fall's first freeze usually shows up around 11/13, roughly 239 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sumter in Zone 8b (15 to 20°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
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.
Why 03/21 isn't a guarantee
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
About 239 days separate Sumter's last and first frost, putting it 8,769 of 40,283 ZIP codes nationally. Within SC, it ranks 192 of 519.
Learn more
Two guides worth reading on 29062: zone vs. frost date, on why Zone 8b and Sumter's frost date answer different questions, and the frost range, on how to read the range around Sumter's dates instead of trusting one.