San Antonio, TX Weather & Growing Conditions
Tonight
52°F
Mostly Clear
Mostly clear, with a low around 52. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear | 5 mph N | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph NE | 0% |
| Wednesday Night | 53°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph SE | 3% |
| Thursday Night | 58°F | Partly Cloudy | 0 to 20 mph N | 4% |
| Friday | 74°F | Sunny | 10 to 20 mph NNE | 0% |
| Friday Night | 53°F | Partly Cloudy | 5 to 15 mph NNE | 3% |
| Saturday | 69°F | Slight Chance Rain Showers | 10 to 15 mph NNE | 18% |
| Saturday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NNE | 15% |
| Sunday | 70°F | Mostly Sunny | 5 to 10 mph NNE | 11% |
| Sunday Night | 49°F | Mostly Clear | 0 to 5 mph NNE | 6% |
| Monday | 71°F | Sunny | 5 mph NE | 4% |
| Monday Night | 50°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Tuesday | 73°F | Mostly Sunny | 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 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 Nov 4, 2026.