Smyrna, GA 30080 Frost Dates
30080, near Smyrna, GA: the frost window
Around 03/27 is the usual last spring frost, about 211 days away. Fall's first freeze usually shows up around 11/07, roughly 225 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Smyrna in Zone 8a (10 to 15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Smyrna's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/27 isn't a guarantee
03/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Smyrna against the rest of the dataset
About 225 days separate Smyrna's last and first frost, putting it 11,357 of 40,283 ZIP codes nationally. Within GA, it ranks 684 of 921.
Learn more
Two guides worth reading on 30080: the frost range, on how to read the range around Smyrna's dates instead of trusting one, and local microclimates, on what one yard in Smyrna can differ from the 30080 normal.