Boston, GA 31629 Frost Dates
Frost dates for Boston, GA, ZIP 31629
Around 03/11 is the usual last spring frost, about 195 days away. The first fall frost typically arrives around 11/18, about 253 frost-free days later.
Zone 9a (20 to 25°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 Boston, not a forecast for this year.
What to do before the first frost
Zone 9a around Boston 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 03/11 isn't a guarantee
03/11 is the middle of 30 years of NOAA records, not a promise. Plant by 02/16 and you're betting against frost in roughly 9 years out of 10. 03/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Boston compares
Boston's growing season runs about 253 days, ranking 7,166 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 233 of 921.
Learn more
the frost range explains how to read the range around Boston's dates instead of trusting one, and local microclimates explains what one yard in Boston can differ from the 31629 normal.