Jacksonville, FL 32220 Frost Dates
Frost dates for Jacksonville, FL, ZIP 32220
Typically, the last spring freeze lands around 02/28, roughly 184 days out. The first fall frost typically arrives around 12/03, about 280 frost-free days later.
Jacksonville sits in USDA Zone 9a (20 to 25°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.
What to do before the first frost
Zone 9a around Jacksonville has about 14 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
02/28 is the middle of 30 years of NOAA records, not a promise. Plant by 01/30 and you're betting against frost in roughly 9 years out of 10. 03/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jacksonville compares
Jacksonville's growing season runs about 280 days, ranking 4,824 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,427 of 1,609.
Learn more
the frost range explains how to read the range around Jacksonville's dates instead of trusting one, and local microclimates explains what one yard in Jacksonville can differ from the 32220 normal.