Macon-Bibb County, GA 31203 Frost Dates
When can you plant in Macon-Bibb County, GA?
Typically, the last spring freeze lands around 03/21, roughly 205 days out. The first fall frost typically arrives around 11/10, about 235 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 Macon-Bibb County, not a forecast for this year.
What to do before the first frost
About 11 weeks of growing season left in Macon-Bibb County before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/21 isn't a guarantee
03/21 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 04/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Macon-Bibb County compares
Macon-Bibb County's growing season runs about 235 days, ranking 9,537 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 399 of 921.
Learn more
local microclimates covers what one yard in Macon-Bibb County can differ from the 31203 normal. zone vs. frost date covers why Zone 8b and Macon-Bibb County's frost date answer different questions.