St. Petersburg, FL 33573 Frost Dates
When can you plant in St. Petersburg, FL?
Typically, the last spring freeze lands around 01/28, roughly 153 days out. The first fall frost typically arrives around 01/09, about 355 frost-free days later.
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 St. Petersburg, not a forecast for this year.
What to do before the first frost
About 19 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
01/28 is the middle of 30 years of NOAA records, not a promise. Plant by 02/24 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
At roughly 355 frost-free days, St. Petersburg places 2,131 of 40,283 ZIP codes in this dataset. Within FL, it ranks 934 of 1,609.
Learn more
the frost range covers how to read the range around St. Petersburg's dates instead of trusting one. local microclimates covers what one yard in St. Petersburg can differ from the 33573 normal.