Gulfport, MS 39505 Frost Dates
39505, near Gulfport, MS: the frost window
Around 02/23 is the usual last spring frost, about 179 days away. Fall's first freeze usually shows up around 12/03, roughly 287 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Gulfport in Zone 9a (20 to 25°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
Gulfport's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Gulfport's last frost
02/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/16 and only about 1 year in 10 sees frost after that.
Gulfport against the rest of the dataset
Gulfport's growing season runs about 287 days, ranking 4,572 of 40,283 US ZIP codes measured here, longest to shortest. Within MS, it ranks 11 of 523.
Learn more
Two guides worth reading on 39505: zone vs. frost date, on why Zone 9a and Gulfport's frost date answer different questions, and the frost range, on how to read the range around Gulfport's dates instead of trusting one.