Mount Airy, NC 24351 Frost Dates
24351, near Mount Airy, NC: the frost window
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/21, roughly 180 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mount Airy in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Mount Airy's growing season runs out in roughly 8 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 Mount Airy's last frost
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Mount Airy against the rest of the dataset
Mount Airy's growing season runs about 180 days, ranking 24,818 of 40,283 US ZIP codes measured here, longest to shortest. Within NC, it ranks 1,011 of 1,078.
Learn more
Two guides worth reading on 24351: local microclimates, on what one yard in Mount Airy can differ from the 24351 normal, and zone vs. frost date, on why Zone 7b and Mount Airy's frost date answer different questions.