San Antonio, TX Weather & Growing Conditions
Today
96°F
Mostly Sunny
Mostly sunny, with a high near 96. Heat index values as high as 102. Southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Tonight | 75°F | Mostly Clear | 5 to 10 mph SE | 0% |
| Sunday | 97°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Sunday Night | 76°F | Partly Cloudy | 5 mph SE | 4% |
| Monday | 97°F | Sunny | 0 to 5 mph SE | 7% |
| Monday Night | 77°F | Mostly Clear | 0 to 5 mph SE | 10% |
| Tuesday | 97°F | Sunny | 0 to 10 mph ENE | 10% |
| Tuesday Night | 77°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 18% |
| Wednesday | 97°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph ENE | 18% |
| Wednesday Night | 76°F | Partly Cloudy | 0 to 10 mph E | 11% |
| Thursday | 97°F | Mostly Sunny | 5 to 10 mph ENE | 10% |
| Thursday Night | 76°F | Partly Cloudy | 5 to 10 mph E | 5% |
| Friday | 96°F | Mostly Sunny | 5 to 10 mph ENE | 5% |
| Friday Night | 75°F | Partly Cloudy | 5 to 10 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Antonio, TX
Last spring frost
Feb 25
First fall frost
Nov 28
Growing season
277 days
Hardiness zone
9a
Explore more for San Antonio, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, San Antonio Incarnate Word, Tx (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.