San Antonio, TX Weather & Growing Conditions
Tonight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. Southeast wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Partly Cloudy | 0 to 10 mph SE | 0% |
| Saturday | 97°F | Sunny | 0 to 5 mph ESE | 1% |
| Saturday Night | 74°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Sunday | 98°F | Mostly Sunny | 5 mph SSE | 0% |
| Sunday Night | 75°F | Partly Cloudy | 5 to 10 mph SSE | 9% |
| Monday | 98°F | Mostly Sunny | 5 mph ESE | 9% |
| Monday Night | 76°F | Mostly Clear | 0 to 10 mph SE | 9% |
| Tuesday | 98°F | Sunny | 0 to 10 mph ENE | 11% |
| Tuesday Night | 76°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 18% |
| Wednesday | 98°F | Mostly Sunny | 5 to 10 mph ENE | 14% |
| Wednesday Night | 76°F | Partly Cloudy | 0 to 10 mph E | 10% |
| Thursday | 97°F | Mostly Sunny | 5 to 15 mph ENE | 8% |
| Thursday Night | 75°F | Partly Cloudy | 5 to 15 mph E | 7% |
| Friday | 97°F | Mostly Sunny | 5 to 15 mph ENE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Antonio, TX
Last spring frost
Feb 21
First fall frost
Dec 5
Growing season
289 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, Randolph Afb, Tx (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.