Mills River, NC 28759 Frost Dates
Frost dates for Mills River, NC, ZIP 28759
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/23, about 187 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mills River in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7b around Mills River has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mills River compares
Mills River's growing season runs about 187 days, ranking 22,342 of 40,283 US ZIP codes measured here, longest to shortest. Within NC, it ranks 984 of 1,078.
Learn more
local microclimates explains what one yard in Mills River can differ from the 28759 normal, and zone vs. frost date explains why Zone 7b and Mills River's frost date answer different questions.