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

83°F

28°C

Humidity 70%
Wind Speed SE 6 mph
Barometer 29.98 in (1014.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 1 Sep 10:56 pm CDT
Extended Forecast for

Wimberley TX

  • Tonight

    Tonight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 98. Heat index values as high as 102. Southwest wind around 5 mph becoming northeast in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 75. East northeast wind around 5 mph becoming south after midnight.

    Low: 75 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 98. Heat index values as high as 102. South wind around 5 mph.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the morning.

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm after midnight.

    Low: 73 °F

    Partly Cloudy

  • Saturday

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

    High: 96 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Calm wind.
Wednesday
Mostly sunny, with a high near 98. Heat index values as high as 102. Southwest wind around 5 mph becoming northeast in the afternoon.
Wednesday Night
Increasing clouds, with a low around 75. East northeast wind around 5 mph becoming south after midnight.
Thursday
Mostly sunny, with a high near 98. Heat index values as high as 102. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 74. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 74.
Labor Day
Sunny, with a high near 97.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wimberley TX
 29.99°N 98.13°W (Elev. 997 ft)
Last Update:
11:32 pm CDT Sep 1, 2026
Forecast Valid:
11pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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