St. Petersburg, FL 33713 Frost Dates
When can you plant in St. Petersburg, FL?
Around 01/17 is the usual last spring frost, about 142 days away. The first fall frost typically arrives around 01/15, about 365 frost-free days later.
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.
What to do before the first frost
About 20 weeks of growing season left in St. Petersburg before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
01/17 is the middle of 30 years of NOAA records, not a promise. Plant by 02/05 and you're betting against frost in roughly 9 years out of 10. 12/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Petersburg compares
About 365 days separate St. Petersburg's last and first frost, putting it 315 of 40,283 ZIP codes nationally. Within FL, it ranks 74 of 1,609.
Learn more
local microclimates covers what one yard in St. Petersburg can differ from the 33713 normal. zone vs. frost date covers why Zone 10b and St. Petersburg's frost date answer different questions.