Johnsonville, SC 29555 Frost Dates
29555, near Johnsonville, SC: the frost window
The last spring frost here typically falls around 03/22, about 206 days from today. Fall's first freeze usually shows up around 11/11, roughly 234 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Johnsonville 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
Johnsonville'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 Johnsonville's last frost
03/22 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 04/13 and only about 1 year in 10 sees frost after that.
Johnsonville against the rest of the dataset
About 234 days separate Johnsonville's last and first frost, putting it 9,763 of 40,283 ZIP codes nationally. Within SC, it ranks 275 of 519.
Learn more
Two guides worth reading on 29555: local microclimates, on what one yard in Johnsonville can differ from the 29555 normal, and zone vs. frost date, on why Zone 8b and Johnsonville's frost date answer different questions.