Oak City, NC 27857 Frost Dates
27857, near Oak City, NC: the frost window
Around 03/20 is the usual last spring frost, about 204 days away. Fall's first freeze usually shows up around 11/12, 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 Oak City, not a forecast for this year.
Stretching the season past the first frost
Oak City'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.
Why 03/20 isn't a guarantee
03/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/05 and only about 1 year in 10 sees frost after that.
Oak City against the rest of the dataset
Oak City's growing season runs about 239 days, ranking 8,894 of 40,283 US ZIP codes measured here, longest to shortest. Within NC, it ranks 95 of 1,078.
Learn more
Two guides worth reading on 27857: the frost range, on how to read the range around Oak City's dates instead of trusting one, and local microclimates, on what one yard in Oak City can differ from the 27857 normal.