National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair with Haze

103°F

39°C

Humidity 24%
Wind Speed S 7 mph
Barometer 29.96 in (1013.5 mb)
Dewpoint 60°F (16°C)
Visibility 2.50 mi
Heat Index104°F (40°C)
Last update 22 Aug 5:56 pm CDT
Extended Forecast for

2 Miles SSE Dale TX

Heat Advisory August 22, 06:25pm until August 23, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 06:25pm until August 23, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 104. Southwest wind 5 to 10 mph becoming southeast in the afternoon.

    High: 104 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 103. South southwest wind 5 to 10 mph.

    High: 103 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 76. South southeast wind 10 to 15 mph.

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 105. South southwest wind 5 to 10 mph.

    High: 105 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph becoming southwest after midnight.
Sunday
Sunny and hot, with a high near 104. Southwest wind 5 to 10 mph becoming southeast in the afternoon.
Sunday Night
Mostly clear, with a low around 76. South southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 103. South southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 76. South southeast wind 10 to 15 mph.
Wednesday
Sunny and hot, with a high near 105. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny and hot, with a high near 104.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 102.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 77.
Saturday
A 20 percent chance of showers. Sunny and hot, with a high near 101.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Dale TX
 29.84°N 97.52°W (Elev. 449 ft)
Last Update:
5:46 pm CDT Aug 22, 2026
Forecast Valid:
6pm CDT Aug 22, 2026-6pm CDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation