Frost dates for San Antonio, Texas
In a typical year, San Antonio’s last spring frost lands around Feb 25 and the first fall frost around Nov 28, a growing season of about 276 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9a.
Right now the growing season is open, with about 34 days until the typical first fall frost.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Jan 28 | Nov 7 |
| 50 percent | Feb 25 | Nov 28 |
| 90 percent | Mar 19 | Dec 21 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in San Antonio is typically around 68°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in San Antonio
- Radish (Cherry Belle)
- Garlic (Music)
- Shallot (French Red Shallot)
Timing comes from the same temperature engine the app uses, run against San Antonio’s normals for today.
Common questions
When is the last frost in San Antonio, Texas?
San Antonio’s last spring frost falls around February 25 in a typical year. One year in ten it is done by January 28, and one year in ten frost holds on until March 19. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in San Antonio?
The first fall frost arrives around November 28 in a typical year, as early as November 7 in an early year and as late as December 21 in a late one.
How long is the growing season in San Antonio?
About 276 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is San Antonio in?
San Antonio is in USDA hardiness zone 9a under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Kerrville, TX (around Mar 27 to Nov 7)
- Austin, TX (around Feb 20 to Dec 3)
- Uvalde, TX (around Mar 12 to Nov 14)
- Round Rock, TX (around Mar 11 to Nov 20)
- Victoria, TX (around Feb 14 to Dec 9)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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