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Hourly Forecast
Daylight Hours
05:51
Sunrise
17:55
Sunset
Moon
Waxing Crescent
10:01
Moonrise
21:27
Moonset
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Weather in San Antonio today, September 16, 2026
Expect unsettled, showery conditions in San Antonio on September 16, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans.
The day peaks near 28°C and cools toward 27°C. Relative humidity sits between 80% and 88%, reaching its peak around 20:00. A lighter breeze peaks around 17:00 near 4.0 km/h.
Expect the wet theme to continue later, as rain odds reach 72% near 12:00. Cloud amounts hold near 95% around 20:00. Visibility stays generally good near 15.8 km on average, though it can drop toward 13.4 km in thicker cloud or showers. Sunrise is at 05:51 and sunset at 17:55, giving 12 hours 3 minutes of sunlight today.
Taken together, San Antonio looks wet enough on September 16, 2026 that flexible outdoor plans work best, with temperatures peaking near 28°C.
Frequently asked questions about weather in San Antonio
How warm does it get in San Antonio?
The warmest month in San Antonio is April, with average high temperatures of 32°C. The average temperature during this period is around 29°C.
How cold does it get in San Antonio?
The coldest month in San Antonio is February, with average low temperatures of 24°C. The average temperature during this period is around 27°C.
What is the wettest time of year in San Antonio?
The wettest month in San Antonio is July, with an average of 692mm of precipitation.
What is the driest time of year in San Antonio?
The driest month in San Antonio is March, with an average of 26mm of precipitation.
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