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

88°F

31°C

Humidity 66%
Wind Speed SE 13 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 12 Oct 1:56 pm CDT
Extended Forecast for

Niederwald TX

  • Columbus Day

    Columbus Day: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Heat index values as high as 101. South southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Chance
    T-storms

  • Tonight

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

    Low: 75 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 76. South southeast wind around 10 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 91. South southeast wind around 5 mph.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. East southeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 83. Breezy, with a north northeast wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 83 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Columbus Day
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Heat index values as high as 101. South southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 103. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Increasing clouds, with a low around 76. South southeast wind around 10 mph, with gusts as high as 25 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 69. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 91. South southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 65. East southeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 83. Breezy, with a north northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30°N 97.73°W (Elev. 548 ft)
Last Update:
1:36 pm CDT Oct 12, 2026
Forecast Valid:
2pm CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation