Marianna, FL 32447 Frost Dates
32447, near Marianna, FL: the frost window
Around 03/01 is the usual last spring frost, about 185 days away. Fall's first freeze usually shows up around 11/27, roughly 270 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Marianna in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Marianna's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Marianna's last frost
03/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/21 and only about 1 year in 10 sees frost after that.
Marianna against the rest of the dataset
At roughly 270 frost-free days, Marianna places 5,573 of 40,283 ZIP codes in this dataset. Within FL, it ranks 1,504 of 1,609.
Learn more
Two guides worth reading on 32447: the frost range, on how to read the range around Marianna's dates instead of trusting one, and local microclimates, on what one yard in Marianna can differ from the 32447 normal.