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

79°F

26°C

Humidity 77%
Wind Speed E 7 mph
Barometer 29.81 in (1008.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 9 May 8:56 pm CDT
Extended Forecast for

Niederwald TX

  • Tonight

    Tonight: Mostly clear, with a low around 71. South southeast wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 90. South wind around 5 mph.

    High: 90 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 4am, then a slight chance of showers. Low around 66. Southeast wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 66 °F

    T-storms then
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 7am. Partly sunny, with a high near 81. North wind around 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. North northeast wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. North northeast wind around 5 mph becoming east in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the morning.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Southeast wind around 5 mph becoming calm after midnight.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South southeast wind around 5 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 90. South wind around 5 mph.
Sunday Night
Showers and thunderstorms before 4am, then a slight chance of showers. Low around 66. Southeast wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A 10 percent chance of showers before 7am. Partly sunny, with a high near 81. North wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 63. North northeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 84. North northeast wind around 5 mph becoming east in the afternoon.
Tuesday Night
Mostly clear, with a low around 65. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 66. Southeast wind around 5 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 89.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Partly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30.02°N 97.73°W (Elev. 614 ft)
Last Update:
6:46 pm CDT May 9, 2026
Forecast Valid:
9pm CDT May 9, 2026-6pm CDT May 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation