Port Wentworth, GA 31407 Frost Dates
Port Wentworth, GA: when does the frost end?
The last spring frost here typically falls around 03/02, about 186 days from today. Fall's first freeze usually shows up around 11/30, roughly 270 days after the last spring frost.
Zone 9a (20 to 25°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 Port Wentworth, not a forecast for this year.
Stretching the season past the first frost
With roughly 13 weeks until Port Wentworth's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Port Wentworth's last frost
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/25 and only about 1 year in 10 sees frost after that.
Port Wentworth against the rest of the dataset
Port Wentworth's growing season runs about 270 days, ranking 5,557 of 40,283 US ZIP codes measured here, longest to shortest. Within GA, it ranks 31 of 921.
Learn more
Before leaning on 31407's figures: the frost range explains how to read the range around Port Wentworth's dates instead of trusting one, while local microclimates explains what one yard in Port Wentworth can differ from the 31407 normal.