Porterdale, GA 30015 Frost Dates
30015, near Porterdale, GA: the frost window
The last spring frost here typically falls around 03/22, about 206 days from today. Fall's first freeze usually shows up around 11/14, roughly 238 days after the last spring frost.
Zone 8b (15 to 20°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 Porterdale, not a forecast for this year.
Stretching the season past the first frost
Porterdale's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/22 isn't a guarantee
03/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Porterdale against the rest of the dataset
Porterdale's growing season runs about 238 days, ranking 8,984 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 376 of 921.
Learn more
Two guides worth reading on 30015: the frost range, on how to read the range around Porterdale's dates instead of trusting one, and local microclimates, on what one yard in Porterdale can differ from the 30015 normal.