St. Marys, GA 31548 Frost Dates
St. Marys, GA: when does the frost end?
The last spring frost here typically falls around 03/14, about 198 days from today. Fall's first freeze usually shows up around 11/25, roughly 257 days after the last spring frost.
St. Marys sits in USDA Zone 9a (20 to 25°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
With roughly 13 weeks until St. Marys's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around St. Marys's last frost
03/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/17 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.
St. Marys against the rest of the dataset
About 257 days separate St. Marys's last and first frost, putting it 6,682 of 40,283 ZIP codes nationally. Within GA, it ranks 159 of 921.
Learn more
Before leaning on 31548's figures: the frost range explains how to read the range around St. Marys's dates instead of trusting one, while local microclimates explains what one yard in St. Marys can differ from the 31548 normal.