Zolfo Springs, FL 33865 Frost Dates
Frost dates for Zolfo Springs, FL, ZIP 33865
The last spring frost here typically falls around 02/04, about 160 days from today. The first fall frost typically arrives around 01/08, about 332 frost-free days later.
Zolfo Springs 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.
What to do before the first frost
Zone 9b around Zolfo Springs 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.
How much risk comes with planting early here
02/04 is the middle of 30 years of NOAA records, not a promise. Plant by 01/04 and you're betting against frost in roughly 9 years out of 10. 03/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Zolfo Springs compares
At roughly 332 frost-free days, Zolfo Springs places 2,903 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,138 of 1,609.
Learn more
local microclimates explains what one yard in Zolfo Springs can differ from the 33865 normal, and zone vs. frost date explains why Zone 9b and Zolfo Springs's frost date answer different questions.