Marine Weather Net

San Antonio, TX Weather Forecast




San Antonio, Texas

 Lat: 29.46N, Lon: 98.51W

Current Conditions Updated: 655 AM CDT THU AUG 27 2026

Clear


Temp: 78°F
  • Humidity:
  • 75%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.94 in.
  • Dewpoint:
  • 70°F
  • Heat index:
  • 80°F

  • Sunrise:
  • 7:07 AM CDT
  • Sunset:
  • 8:00 PM CDT
  • Moonrise:
  • 7:52 PM CDT
  • Moonset:
  • 6:33 AM CDT

TODAY

MOSTLY SUNNY
Hi: 100°F
Lo: 75°F
Precip: 40%

FRIDAY

CHANCE OF T-STORM
Hi: 99°F
Lo: 75°F

SATURDAY

MOSTLY SUNNY
Hi: 99°F
Lo: 75°F

SUNDAY

MOSTLY SUNNY
Hi: 99°F
Lo: 75°F
Weather Forecast In Detail:
Forecast Issued: 401 AM CDT Thu Aug 27 2026

HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
Today...Mostly sunny this morning, then partly cloudy with a chance of showers and thunderstorms this afternoon. Hot with highs around 100. West winds around 5 mph, becoming north this afternoon. Chance of rain 40 percent.
Tonight...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 70s. East winds around 5 mph, becoming north after midnight. Chance of rain 30 percent.
Friday...Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. East winds 5 to 10 mph. Highest heat index readings up to 105.
Friday Night...Mostly clear. 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. Highest heat index readings up to 105.
Saturday Night...Clear. Lows in the mid 70s.
Sunday...Mostly sunny. Highs in the upper 90s.
Sunday Night...Clear. Lows in the mid 70s.
Monday...Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 105.
Monday Night And Tuesday...Mostly clear. Lows in the mid 70s. Highs in the upper 90s. Highest heat index readings up to 105.
Tuesday Night...Clear. Lows in the mid 70s.
Wednesday...Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 105.
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