Fort Pierce, FL 34979 Frost Dates
Frost dates for Fort Pierce, FL, ZIP 34979
Typically, the last spring freeze lands around 01/24, roughly 149 days out. The first fall frost typically arrives around 01/14, about 365 frost-free days later.
Fort Pierce sits in USDA Zone 10a (30 to 35°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 10a around Fort Pierce has about 20 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 01/24 isn't a guarantee
01/24 is the middle of 30 years of NOAA records, not a promise. Plant by 01/01 and you're betting against frost in roughly 9 years out of 10. 02/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fort Pierce compares
Fort Pierce's growing season runs about 365 days, ranking 888 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 364 of 1,609.
Learn more
local microclimates explains what one yard in Fort Pierce can differ from the 34979 normal, and zone vs. frost date explains why Zone 10a and Fort Pierce's frost date answer different questions.