St. Petersburg, FL 33703 Frost Dates
St. Petersburg, FL: when does the frost end?
Around 01/17 is the usual last spring frost, about 142 days away. Fall's first freeze usually shows up around 01/15, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts St. Petersburg in Zone 10b (35 to 40°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
With roughly 20 weeks until St. Petersburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around St. Petersburg's last frost
01/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/31 and only about 1 year in 10 sees frost after that.
St. Petersburg against the rest of the dataset
About 365 days separate St. Petersburg's last and first frost, putting it 311 of 40,283 ZIP codes nationally. Within FL, it ranks 70 of 1,609.
Learn more
Before leaning on 33703's figures: local microclimates explains what one yard in St. Petersburg can differ from the 33703 normal, while zone vs. frost date explains why Zone 10b and St. Petersburg's frost date answer different questions.