Port St. Joe, FL 32457 Frost Dates
Port St. Joe, FL: when does the frost end?
Typically, the last spring freeze lands around 03/01, roughly 185 days out. Fall's first freeze usually shows up around 11/29, roughly 271 days after the last spring frost.
Port St. Joe sits in USDA Zone 9b (25 to 30°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 Port St. Joe'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 St. Joe's last frost
03/01 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 03/20 and only about 1 year in 10 sees frost after that.
Port St. Joe against the rest of the dataset
About 271 days separate Port St. Joe's last and first frost, putting it 5,433 of 40,283 ZIP codes nationally. Within FL, it ranks 1,494 of 1,609.
Learn more
Before leaning on 32457's figures: zone vs. frost date explains why Zone 9b and Port St. Joe's frost date answer different questions, while the frost range explains how to read the range around Port St. Joe's dates instead of trusting one.