San Antonio, TX Weather & Growing Conditions
Tonight
55°F
Clear
Clear, with a low around 55. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Clear | 5 mph N | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph ENE | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph ESE | 3% |
| Thursday Night | 60°F | Partly Cloudy | 0 to 20 mph N | 4% |
| Friday | 74°F | Sunny | 5 to 15 mph NNE | 0% |
| Friday Night | 56°F | Partly Cloudy | 5 to 10 mph NNE | 4% |
| Saturday | 69°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 21% |
| Saturday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 12% |
| Sunday | 70°F | Mostly Sunny | 5 to 10 mph NNE | 11% |
| Sunday Night | 52°F | Mostly Clear | 0 to 5 mph NNE | 5% |
| Monday | 71°F | Sunny | 0 to 5 mph ENE | 4% |
| Monday Night | 52°F | Partly Cloudy | 0 to 5 mph E | 2% |
| Tuesday | 73°F | Mostly Sunny | 0 to 5 mph SE | 4% |
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 (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.