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Daylight Hours
06:07
Sunrise
18:10
Sunset
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Waxing Crescent
10:34
Moonrise
21:30
Moonset
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Weather in San Antonio today, September 16, 2026
San Antonio starts September 16, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. The morning looks comparatively open, with cloud near 57% around 11:00. Early outdoor plans have a better chance of staying dry and bright.
The temperature range runs from about 21°C up to 30°C. Expect humidity between 59% and 96%, most humid near 23:00. A lighter breeze peaks around 11:00 near 2.2 km/h.
The second half of the day still looks unsettled, with rain probability around 86% by 15:00. Dense cloud near 78% at 14:00 keeps the feel grey. Expect visibility near 15.6 km, with poorer spells close to 4.3 km. Daylight runs from 06:07 to 18:10, lasting 12 hours 2 minutes of sunlight today.
The practical takeaway for San Antonio on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 30°C.
Frequently asked questions about weather in San Antonio
How warm does it get in San Antonio?
The warmest month in San Antonio is September, with average high temperatures of 30°C. The average temperature during this period is around 24°C.
How cold does it get in San Antonio?
The coldest month in San Antonio is January, with average low temperatures of 18°C. The average temperature during this period is around 22°C.
What is the wettest time of year in San Antonio?
The wettest month in San Antonio is June, with an average of 140mm of precipitation.
What is the driest time of year in San Antonio?
The driest month in San Antonio is February, with an average of 22mm of precipitation.
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