St. Augustine, FL 32004 Frost Dates
Frost dates for St. Augustine, FL, ZIP 32004
Typically, the last spring freeze lands around 02/01, roughly 157 days out. The first fall frost typically arrives around 01/05, about 334 frost-free days later.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for St. Augustine, not a forecast for this year.
What to do before the first frost
Zone 9b around St. Augustine has about 19 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.
Why 02/01 isn't a guarantee
02/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/03 and you're betting against frost in roughly 9 years out of 10. 12/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Augustine compares
At roughly 334 frost-free days, St. Augustine places 2,783 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,102 of 1,609.
Learn more
the frost range explains how to read the range around St. Augustine's dates instead of trusting one, and local microclimates explains what one yard in St. Augustine can differ from the 32004 normal.