Jacksonville, FL 32203 Frost Dates
32203, near Jacksonville, FL: the frost window
The last spring frost here typically falls around 02/09, about 165 days from today. Fall's first freeze usually shows up around 12/31, roughly 314 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 18 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
02/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/07 and only about 1 year in 10 sees frost after that.
Jacksonville against the rest of the dataset
Jacksonville's growing season runs about 314 days, ranking 3,423 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,242 of 1,609.
Learn more
Two guides worth reading on 32203: zone vs. frost date, on why Zone 9b and Jacksonville's frost date answer different questions, and the frost range, on how to read the range around Jacksonville's dates instead of trusting one.