San Antonio, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Antonio, a city in Bexar County, Texas.
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. North wind around 5 mph.
7-day forecast for San Antonio
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 5 mph N | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph ENE | 0% |
| Wednesday Night | 55°F | Mostly Clear | 0 mph | 0% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph SSE | 2% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 15 mph N | 3% |
| Friday | 74°F | Sunny | 5 to 15 mph N | 0% |
| Friday Night | 56°F | Partly Cloudy | 5 to 10 mph NNE | 3% |
| Saturday | 70°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 19% |
| Saturday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 13% |
| Sunday | 70°F | Mostly Sunny | 5 to 10 mph NNE | 11% |
| Sunday Night | 51°F | Mostly Clear | 0 to 5 mph N | 5% |
| Monday | 71°F | Sunny | 5 mph ENE | 4% |
| Monday Night | 52°F | Mostly Clear | 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) for San Antonio (29.463, -98.525). Updated through the day.
Growing snapshot for San Antonio
Last spring frost
Feb 25
First fall frost
Nov 28
Growing season
277 days
Hardiness zone
9a
More local growing data for San Antonio: nearby ZIP 78201 weather · frost dates · planting calendar · Texas frost dates
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Windcrest
Climate data from the nearest NOAA station, San Antonio Incarnate Word, Tx (3.4 mi from San Antonio). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.