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San Antonio, TX Weather Forecast
San Antonio, TX Weather Forecast Date: 354 PM CDT Fri Sep 18 2026
The area/counties/county of: Bexar, including the city of San Antonio.or toggle through each period.
Tonight... Partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph.
Saturday... Mostly sunny. Highs in the upper 90s. Southeast winds 5 to 10 mph.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph.
Sunday... Partly cloudy. Highs in the upper 90s. Southeast winds around 5 mph.
Sunday Night... Partly cloudy. Lows in the mid 70s. Southeast winds 5 to 10 mph.
Monday... Partly cloudy in the morning, then clearing. Highs in the upper 90s.
Monday Night... Mostly clear. Lows in the mid 70s. Highs in the upper 90s. Highest heat index readings up to 105.
Tuesday... Mostly clear. Lows in the mid 70s. Highs in the upper 90s. Highest heat index readings up to 105.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the mid 70s.
Wednesday... Partly cloudy. Highs in the upper 90s. Lows in the mid 70s. Highest heat index readings up to 105.
Thursday... Partly cloudy. Highs in the upper 90s. Lows in the mid 70s. Highest heat index readings up to 105.
POP = Probability of Precipitation
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