Boone, NC 28698 Frost Dates
28698, near Boone, NC: the frost window
Typically, the last spring freeze lands around 05/02, roughly 247 days out. Fall's first freeze usually shows up around 10/13, roughly 163 days after the last spring frost.
Zone 7a (0 to 5°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 Boone, not a forecast for this year.
Stretching the season past the first frost
Boone's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Boone's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Boone against the rest of the dataset
At roughly 163 frost-free days, Boone places 31,339 of 40,283 ZIP codes in this dataset. Within NC, it ranks 1,050 of 1,078.
Learn more
Two guides worth reading on 28698: local microclimates, on what one yard in Boone can differ from the 28698 normal, and zone vs. frost date, on why Zone 7a and Boone's frost date answer different questions.