Smyrna, GA 30385 Frost Dates
Smyrna, GA: when does the frost end?
Around 03/24 is the usual last spring frost, about 208 days away. Fall's first freeze usually shows up around 11/08, roughly 231 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Smyrna in Zone 8b (15 to 20°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
With roughly 10 weeks until Smyrna's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 03/24 isn't a guarantee
03/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/10 and only about 1 year in 10 sees frost after that.
Smyrna against the rest of the dataset
About 231 days separate Smyrna's last and first frost, putting it 10,114 of 40,283 ZIP codes nationally. Within GA, it ranks 521 of 921.
Learn more
Before leaning on 30385's figures: the frost range explains how to read the range around Smyrna's dates instead of trusting one, while local microclimates explains what one yard in Smyrna can differ from the 30385 normal.