Jacksonville, FL 32247 Frost Dates
32247, near Jacksonville, FL: the frost window
Typically, the last spring freeze lands around 02/01, roughly 157 days out. Fall's first freeze usually shows up around 01/05, roughly 330 days after the last spring frost.
Jacksonville 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
Jacksonville's growing season runs out in roughly 19 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 Jacksonville's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/31 and only about 1 year in 10 sees frost after that.
Jacksonville against the rest of the dataset
At roughly 330 frost-free days, Jacksonville places 2,987 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,162 of 1,609.
Learn more
Two guides worth reading on 32247: local microclimates, on what one yard in Jacksonville can differ from the 32247 normal, and zone vs. frost date, on why Zone 9b and Jacksonville's frost date answer different questions.