Decatur, GA 30316 Frost Dates
30316, near Decatur, GA: the frost window
Around 03/15 is the usual last spring frost, about 199 days away. Fall's first freeze usually shows up around 11/20, roughly 252 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Decatur 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
Decatur's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/04 and only about 1 year in 10 sees frost after that.
Decatur against the rest of the dataset
About 252 days separate Decatur's last and first frost, putting it 7,204 of 40,283 ZIP codes nationally. Within GA, it ranks 247 of 921.
Learn more
Two guides worth reading on 30316: zone vs. frost date, on why Zone 8a and Decatur's frost date answer different questions, and the frost range, on how to read the range around Decatur's dates instead of trusting one.