Dunedin, FL 34698 Frost Dates
34698, near Dunedin, FL: the frost window
Typically, the last spring freeze lands around 01/20, roughly 145 days out. Fall's first freeze usually shows up around 01/09, roughly 354 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Dunedin in Zone 10a (30 to 35°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
Dunedin's growing season runs out in roughly 19 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/20 isn't a guarantee
01/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Dunedin against the rest of the dataset
At roughly 354 frost-free days, Dunedin places 2,182 of 40,283 ZIP codes in this dataset. Within FL, it ranks 950 of 1,609.
Learn more
Two guides worth reading on 34698: local microclimates, on what one yard in Dunedin can differ from the 34698 normal, and zone vs. frost date, on why Zone 10a and Dunedin's frost date answer different questions.