Sumter, SC 29154 Frost Dates
Sumter, SC: when does the frost end?
Typically, the last spring freeze lands around 03/21, roughly 205 days out. Fall's first freeze usually shows up around 11/13, roughly 239 days after the last spring frost.
Sumter sits in USDA Zone 8b (15 to 20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 11 weeks until Sumter's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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 8,774 of 40,283 ZIP codes nationally. Within SC, it ranks 197 of 519.
Learn more
Before leaning on 29154's figures: the frost range explains how to read the range around Sumter's dates instead of trusting one, while local microclimates explains what one yard in Sumter can differ from the 29154 normal.