Winnsboro, SC 29180 Frost Dates
Winnsboro, SC: when does the frost end?
Around 03/22 is the usual last spring frost, about 206 days away. Fall's first freeze usually shows up around 11/15, roughly 239 days after the last spring frost.
Zone 8a (10 to 15°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 Winnsboro, not a forecast for this year.
Stretching the season past the first frost
With roughly 11 weeks until Winnsboro's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Winnsboro's last frost
03/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/10 and only about 1 year in 10 sees frost after that.
Winnsboro against the rest of the dataset
About 239 days separate Winnsboro's last and first frost, putting it 8,830 of 40,283 ZIP codes nationally. Within SC, it ranks 201 of 519.
Learn more
Before leaning on 29180's figures: the frost range explains how to read the range around Winnsboro's dates instead of trusting one, while local microclimates explains what one yard in Winnsboro can differ from the 29180 normal.