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.

Overcast

78°F

26°C

Humidity 93%
Wind Speed S 5 mph
Barometer 30.01 in (1015.3 mb)
Dewpoint 76°F (24°C)
Visibility 9.00 mi
Heat Index81°F (27°C)
Last update 5 Aug 5:56 am CDT
Extended Forecast for

Niederwald TX

  • Today

    Today: Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Increasing clouds, with a low around 77. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 104. South wind around 5 mph.

    High: 98 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 97. South wind around 5 mph.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Southeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 77. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 104. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 97. South wind around 5 mph.
Friday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Saturday
Sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph becoming south southwest after midnight.
Sunday
Mostly sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 96.
Monday Night
Partly cloudy, with a low around 77.
Tuesday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30°N 97.76°W (Elev. 564 ft)
Last Update:
6:42 am CDT Aug 5, 2026
Forecast Valid:
6am CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
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Additional Resources

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