Frost dates · Texas
When is the first frost in San Antonio?
In a typical year, San Antonio’s first frost comes around November 28 and its last around February 26.
One year in ten the first frost comes as early as November 7, and nine years in ten it has arrived by December 22. One year in ten the last frost is over as early as January 29, and nine years in ten it is over by March 17. San Antonio averages about 14 nights a year at 32°F or colder, with about 277 frost-free days in between in a typical year. The first frost here usually comes in about 14 days. That makes it the 8th latest first frost of the 117 cities we track where it freezes most years.
Last updated
No freeze in the forecast for the next 48 hours.
San Antonio freezes on about 14 nights a year, and the River Walk barely notices.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | November 7 | November 28 | December 22 |
| Last frost | January 29 | February 26 | March 17 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Charleston, South Carolina: first frost around November 27
- Baton Rouge, Louisiana: first frost around November 26
- Savannah, Georgia: first frost around November 30
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00012921.