Mayo, FL 32066 Frost Dates
32066, near Mayo, FL: the frost window
Around 03/05 is the usual last spring frost, about 189 days away. Fall's first freeze usually shows up around 11/25, roughly 268 days after the last spring frost.
Mayo 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.
Stretching the season past the first frost
Mayo'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.
Why 03/05 isn't a guarantee
03/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/27 and only about 1 year in 10 sees frost after that.
Mayo against the rest of the dataset
Mayo's growing season runs about 268 days, ranking 5,805 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,517 of 1,609.
Learn more
Two guides worth reading on 32066: local microclimates, on what one yard in Mayo can differ from the 32066 normal, and zone vs. frost date, on why Zone 9a and Mayo's frost date answer different questions.