Navassa, NC 28451 Frost Dates
Frost dates for Navassa, NC, ZIP 28451
Around 03/19 is the usual last spring frost, about 203 days away. The first fall frost typically arrives around 11/20, about 247 frost-free days later.
Zone 8b (15 to 20°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 Navassa, not a forecast for this year.
What to do before the first frost
Zone 8b around Navassa has about 12 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 03/19 isn't a guarantee
03/19 is the middle of 30 years of NOAA records, not a promise. Plant by 02/26 and you're betting against frost in roughly 9 years out of 10. 04/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Navassa compares
About 247 days separate Navassa's last and first frost, putting it 7,848 of 40,283 ZIP codes nationally. Within NC, it ranks 53 of 1,078.
Learn more
the frost range explains how to read the range around Navassa's dates instead of trusting one, and local microclimates explains what one yard in Navassa can differ from the 28451 normal.