Duluth, GA 30099 Frost Dates
30099, near Duluth, GA: the frost window
The last spring frost here typically falls around 03/25, about 209 days from today. Fall's first freeze usually shows up around 11/09, roughly 228 days after the last spring frost.
Duluth sits in USDA Zone 8a (10 to 15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Duluth'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 03/25 isn't a guarantee
03/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 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.
Duluth against the rest of the dataset
At roughly 228 frost-free days, Duluth places 10,725 of 40,283 ZIP codes in this dataset. Within GA, it ranks 584 of 921.
Learn more
Two guides worth reading on 30099: local microclimates, on what one yard in Duluth can differ from the 30099 normal, and zone vs. frost date, on why Zone 8a and Duluth's frost date answer different questions.