Brunswick, GA 31521 Frost Dates
Frost dates for Brunswick, GA, ZIP 31521
Typically, the last spring freeze lands around 02/09, roughly 165 days out. The first fall frost typically arrives around 12/26, about 312 frost-free days later.
The USDA Plant Hardiness Zone Map puts Brunswick in Zone 9a (20 to 25°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 9a around Brunswick has about 17 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 Brunswick's last frost
02/09 is the middle of 30 years of NOAA records, not a promise. Plant by 01/11 and you're betting against frost in roughly 9 years out of 10. 03/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brunswick compares
Brunswick's growing season runs about 312 days, ranking 3,495 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 2 of 921.
Learn more
the frost range explains how to read the range around Brunswick's dates instead of trusting one, and local microclimates explains what one yard in Brunswick can differ from the 31521 normal.