San Antonio, TX Weather & Growing Conditions
This Afternoon
95°F
Partly Sunny
Partly sunny, with a high near 95. Heat index values as high as 101. South southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Partly Sunny | 5 mph SSE | 0% |
| Tonight | 73°F | Partly Cloudy | 0 to 10 mph SSE | 0% |
| Sunday | 98°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Sunday Night | 74°F | Partly Cloudy | 0 to 10 mph SSE | 3% |
| Monday | 99°F | Mostly Sunny | 0 to 10 mph SE | 5% |
| Monday Night | 75°F | Mostly Clear | 0 to 10 mph SE | 12% |
| Tuesday | 99°F | Sunny | 0 to 10 mph E | 7% |
| Tuesday Night | 75°F | Partly Cloudy | 0 to 10 mph E | 12% |
| Wednesday | 99°F | Mostly Sunny | 5 to 15 mph ENE | 9% |
| Wednesday Night | 75°F | Partly Cloudy | 0 to 15 mph E | 7% |
| Thursday | 98°F | Mostly Sunny | 5 to 15 mph ENE | 5% |
| Thursday Night | 75°F | Partly Cloudy | 0 to 15 mph E | 5% |
| Friday | 98°F | Mostly Sunny | 5 to 10 mph ENE | 3% |
| Friday Night | 74°F | Partly Cloudy | 5 to 10 mph ESE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Antonio, TX
Last spring frost
Feb 20
First fall frost
Dec 3
Growing season
291 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 Stinson Ap, Tx (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.