Greenville, SC 29609 Frost Dates
29609, near Greenville, SC: the frost window
Around 03/16 is the usual last spring frost, about 200 days away. Fall's first freeze usually shows up around 11/20, roughly 250 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Greenville in Zone 8a (10 to 15°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
Greenville's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/16 isn't a guarantee
03/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/02 and only about 1 year in 10 sees frost after that.
Greenville against the rest of the dataset
At roughly 250 frost-free days, Greenville places 7,434 of 40,283 ZIP codes in this dataset. Within SC, it ranks 113 of 519.
Learn more
Two guides worth reading on 29609: zone vs. frost date, on why Zone 8a and Greenville's frost date answer different questions, and the frost range, on how to read the range around Greenville's dates instead of trusting one.