Marianna, FL 32446 Frost Dates
Frost dates for Marianna, FL, ZIP 32446
Around 03/01 is the usual last spring frost, about 185 days away. The first fall frost typically arrives around 11/27, about 270 frost-free days later.
Marianna 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 Marianna has about 13 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.
The actual range around Marianna's last frost
03/01 is the middle of 30 years of NOAA records, not a promise. Plant by 02/02 and you're betting against frost in roughly 9 years out of 10. 03/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marianna compares
At roughly 270 frost-free days, Marianna places 5,572 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,503 of 1,609.
Learn more
local microclimates explains what one yard in Marianna can differ from the 32446 normal, and zone vs. frost date explains why Zone 9a and Marianna's frost date answer different questions.