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.

Fair

89°F

32°C

Humidity 59%
Wind Speed S 6 mph
Barometer 30.05 in (1016.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 3 Aug 10:56 am CDT
Extended Forecast for

Niederwald TX

  • Today

    Today: Sunny, with a high near 98. Heat index values as high as 105. South wind around 5 mph becoming calm.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. East northeast wind around 5 mph becoming south after midnight.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 105. South wind around 5 mph becoming east in the afternoon.

    High: 97 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable after midnight.

    Low: 75 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. East wind around 5 mph becoming south after midnight.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. East southeast wind around 5 mph becoming south after midnight.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South southwest wind around 5 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 98. Heat index values as high as 105. South wind around 5 mph becoming calm.
Tonight
Mostly clear, with a low around 76. East northeast wind around 5 mph becoming south after midnight.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 105. South wind around 5 mph becoming east in the afternoon.
Monday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 75. East wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
Mostly sunny, with a high near 95. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 74. East wind around 5 mph becoming south after midnight.
Wednesday
Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming south after midnight.
Thursday
Sunny, with a high near 97. South southwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny, with a high near 98.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30.02°N 97.73°W (Elev. 614 ft)
Last Update:
11:32 am CDT Aug 3, 2025
Forecast Valid:
11am CDT Aug 3, 2025-6pm CDT Aug 9, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation