San Antonio, FL 34680 Frost Dates
When can you plant in San Antonio, FL?
Typically, the last spring freeze lands around 03/01, roughly 185 days out. The first fall frost typically arrives around 12/05, about 281 frost-free days later.
The USDA Plant Hardiness Zone Map puts San Antonio in Zone 10a (30 to 35°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 14 weeks of growing season left in San Antonio before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around San Antonio's last frost
03/01 is the middle of 30 years of NOAA records, not a promise. Plant by 01/30 and you're betting against frost in roughly 9 years out of 10. 03/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How San Antonio compares
About 281 days separate San Antonio's last and first frost, putting it 4,813 of 40,283 ZIP codes nationally. Within FL, it ranks 1,419 of 1,609.
Learn more
zone vs. frost date covers why Zone 10a and San Antonio's frost date answer different questions. the frost range covers how to read the range around San Antonio's dates instead of trusting one.