San Antonio, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Antonio, a city in Bexar County, Texas.
Overnight
76°F
Partly Cloudy
Partly cloudy, with a low around 76. Southeast wind around 5 mph.
7-day forecast for San Antonio
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Partly Cloudy | 5 mph SE | 0% |
| Saturday | 97°F | Sunny | 5 mph ESE | 1% |
| Saturday Night | 76°F | Mostly Clear | 5 to 10 mph SE | 1% |
| Sunday | 98°F | Mostly Sunny | 5 mph SSE | 0% |
| Sunday Night | 76°F | Partly Cloudy | 5 to 10 mph SE | 11% |
| Monday | 98°F | Mostly Sunny | 5 mph ESE | 11% |
| Monday Night | 77°F | Mostly Clear | 0 to 5 mph SE | 8% |
| Tuesday | 98°F | Sunny | 0 to 10 mph ENE | 10% |
| Tuesday Night | 78°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 | 78°F | Partly Cloudy | 5 to 10 mph E | 11% |
| Thursday | 97°F | Mostly Sunny | 5 to 10 mph ENE | 9% |
| Thursday Night | 77°F | Partly Cloudy | 5 to 10 mph E | 9% |
| Friday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph ENE | 15% |
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 Sep 19, 2026.