Siler City, NC 27213 Frost Dates
27213, near Siler City, NC: the frost window
The last spring frost here typically falls around 04/10, about 225 days from today. Fall's first freeze usually shows up around 10/30, roughly 203 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 Siler City, not a forecast for this year.
Stretching the season past the first frost
Siler City's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Siler City against the rest of the dataset
At roughly 203 frost-free days, Siler City places 16,876 of 40,283 ZIP codes in this dataset. Within NC, it ranks 844 of 1,078.
Learn more
Two guides worth reading on 27213: the frost range, on how to read the range around Siler City's dates instead of trusting one, and local microclimates, on what one yard in Siler City can differ from the 27213 normal.