San Antonio, FL 34656 Frost Dates
34656, near San Antonio, FL: the frost window
The last spring frost here typically falls around 03/01, about 185 days from today. Fall's first freeze usually shows up around 12/05, roughly 281 days after the last spring frost.
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 San Antonio, not a forecast for this year.
Stretching the season past the first frost
San Antonio's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/27 and only about 1 year in 10 sees frost after that.
San Antonio against the rest of the dataset
San Antonio's growing season runs about 281 days, ranking 4,810 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 1,416 of 1,609.
Learn more
Two guides worth reading on 34656: local microclimates, on what one yard in San Antonio can differ from the 34656 normal, and zone vs. frost date, on why Zone 10a and San Antonio's frost date answer different questions.