Brunswick, GA 31561 Frost Dates
Frost dates for Brunswick, GA, ZIP 31561
The last spring frost here typically falls around 02/09, about 165 days from today. The first fall frost typically arrives around 12/26, about 312 frost-free days later.
Brunswick sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a 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.
Why 02/09 isn't a guarantee
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
At roughly 312 frost-free days, Brunswick places 3,500 of 40,283 ZIP codes in this dataset. Within GA, it ranks 7 of 921.
Learn more
local microclimates explains what one yard in Brunswick can differ from the 31561 normal, and zone vs. frost date explains why Zone 9a and Brunswick's frost date answer different questions.