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

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

94°F

34°C

Humidity 49%
Wind Speed SE 10 mph
Barometer 29.96 in (1013.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 15 Jul 4:56 pm CDT
Extended Forecast for

Mountain City TX

  • Tonight

    Tonight: Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 96 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95. Heat index values as high as 100. South wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. South southeast wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 92. South southwest wind around 5 mph.

    High: 92 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 74. Southeast wind around 5 mph becoming south southwest after midnight.

    Low: 74 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind around 10 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 95. Heat index values as high as 100. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 72. South southeast wind around 5 mph.
Friday
Partly sunny, with a high near 92. South southwest wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 74. Southeast wind around 5 mph becoming south southwest after midnight.
Saturday
Mostly sunny, with a high near 95. South southwest wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind around 10 mph.
Sunday
Mostly sunny, with a high near 96.
Sunday Night
Partly cloudy, with a low around 75.
Monday
Mostly sunny, with a high near 97.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.04°N 97.89°W (Elev. 837 ft)
Last Update:
5:32 pm CDT Jul 15, 2025
Forecast Valid:
5pm CDT Jul 15, 2025-6pm CDT Jul 22, 2025
 
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Additional Resources

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