Siler City, NC 27344 Frost Dates
Frost dates for Siler City, NC, ZIP 27344
Typically, the last spring freeze lands around 04/06, roughly 221 days out. The first fall frost typically arrives around 11/01, about 210 frost-free days later.
The USDA Plant Hardiness Zone Map puts Siler City in Zone 8a (10 to 15°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 8a around Siler City has about 9 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.
How much risk comes with planting early here
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/21 and you're betting against frost in roughly 9 years out of 10. 04/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Siler City compares
About 210 days separate Siler City's last and first frost, putting it 14,994 of 40,283 ZIP codes nationally. Within NC, it ranks 762 of 1,078.
Learn more
local microclimates explains what one yard in Siler City can differ from the 27344 normal, and zone vs. frost date explains why Zone 8a and Siler City's frost date answer different questions.