Grifton, NC 28530 Frost Dates
Frost dates for Grifton, NC, ZIP 28530
Around 03/25 is the usual last spring frost, about 209 days away. The first fall frost typically arrives around 11/11, about 232 frost-free days later.
The USDA Plant Hardiness Zone Map puts Grifton in Zone 8b (15 to 20°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 8b around Grifton has about 11 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.
The actual range around Grifton's last frost
03/25 is the middle of 30 years of NOAA records, not a promise. Plant by 03/09 and you're betting against frost in roughly 9 years out of 10. 04/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Grifton compares
Grifton's growing season runs about 232 days, ranking 10,051 of 40,283 US ZIP codes measured here, longest to shortest. Within NC, it ranks 186 of 1,078.
Learn more
the frost range explains how to read the range around Grifton's dates instead of trusting one, and local microclimates explains what one yard in Grifton can differ from the 28530 normal.