Marietta, GA 30006 Frost Dates
Frost dates for Marietta, GA, ZIP 30006
Typically, the last spring freeze lands around 03/27, roughly 211 days out. The first fall frost typically arrives around 11/07, about 225 frost-free days later.
Zone 8a (10 to 15°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 Marietta, not a forecast for this year.
What to do before the first frost
Zone 8a around Marietta has about 10 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 Marietta's last frost
03/27 is the middle of 30 years of NOAA records, not a promise. Plant by 03/09 and you're betting against frost in roughly 9 years out of 10. 04/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marietta compares
Marietta's growing season runs about 225 days, ranking 11,345 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 672 of 921.
Learn more
zone vs. frost date explains why Zone 8a and Marietta's frost date answer different questions, and the frost range explains how to read the range around Marietta's dates instead of trusting one.