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.

Partly Cloudy with Haze

88°F

31°C

Humidity 66%
Wind Speed SW 9 mph
Barometer 29.98 in (1014.2 mb)
Dewpoint 75°F (24°C)
Visibility 5.00 mi
Heat Index98°F (37°C)
Last update 4 Aug 10:56 am CDT
Extended Forecast for

Wimberley TX

  • Today

    Today: Sunny, with a high near 97. Heat index values as high as 103. South southeast wind around 10 mph.

    High: 97 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 97 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

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

    High: 97 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

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

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm after midnight.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 97. Heat index values as high as 103. South southeast wind around 10 mph.
Tonight
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 97. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph.
Friday
Mostly sunny, with a high near 95. Calm wind becoming south around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 75. Southeast wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
Mostly sunny, with a high near 94.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wimberley TX
 29.99°N 98.1°W (Elev. 817 ft)
Last Update:
6:42 am CDT Aug 4, 2026
Forecast Valid:
11am CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation