Frost dates in San Antonio, TX
The average last spring frost in San Antonio is around February 21 and the first fall frost is around November 28. That gives San Antonio an average growing season of about 281 days.
Last spring frost
| Early (10% chance after) | February 1 |
|---|---|
| Average (50%) | February 21 |
| Late (90%) | March 9 |
First fall frost
| Early (10%) | November 1 |
|---|---|
| Average (50%) | November 28 |
| Late (90% chance before) | December 11 |