Erwin, NC 28339 Frost Dates
28339, near Erwin, NC: the frost window
Around 03/28 is the usual last spring frost, about 212 days away. Fall's first freeze usually shows up around 11/07, roughly 226 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 Erwin, not a forecast for this year.
Stretching the season past the first frost
Erwin's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/28 isn't a guarantee
03/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/11 and only about 1 year in 10 sees frost after that.
Erwin against the rest of the dataset
About 226 days separate Erwin's last and first frost, putting it 11,192 of 40,283 ZIP codes nationally. Within NC, it ranks 365 of 1,078.
Learn more
Two guides worth reading on 28339: zone vs. frost date, on why Zone 8a and Erwin's frost date answer different questions, and the frost range, on how to read the range around Erwin's dates instead of trusting one.