Dunedin, FL 34683 Frost Dates
34683, near Dunedin, FL: the frost window
The last spring frost here typically falls around 01/20, about 145 days from today. Fall's first freeze usually shows up around 01/09, roughly 354 days after the last spring frost.
Zone 10a (30 to 35°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Dunedin, not a forecast for this year.
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 2,181 of 40,283 ZIP codes in this dataset. Within FL, it ranks 949 of 1,609.
Learn more
Two guides worth reading on 34683: zone vs. frost date, on why Zone 10a and Dunedin's frost date answer different questions, and the frost range, on how to read the range around Dunedin's dates instead of trusting one.