Oldsmar, FL 33625 Frost Dates
33625, near Oldsmar, FL: the frost window
Around 01/20 is the usual last spring frost, about 145 days away. Fall's first freeze usually shows up around 01/12, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oldsmar 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
Oldsmar's growing season runs out in roughly 20 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 02/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/27 and only about 1 year in 10 sees frost after that.
Oldsmar against the rest of the dataset
About 365 days separate Oldsmar's last and first frost, putting it 1,640 of 40,283 ZIP codes nationally. Within FL, it ranks 676 of 1,609.
Learn more
Two guides worth reading on 33625: local microclimates, on what one yard in Oldsmar can differ from the 33625 normal, and zone vs. frost date, on why Zone 10a and Oldsmar's frost date answer different questions.