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.

Mostly Cloudy

83°F

28°C

Humidity 77%
Wind Speed S 16 mph
Barometer 30.01 in (1015.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 13 Oct 9:56 am CDT
Extended Forecast for

3 Miles ESE Wimberley TX

  • Today

    Today: Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: 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 slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. South southeast wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64. Light and variable wind becoming north 5 to 10 mph after midnight.

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. North wind around 20 mph, with gusts as high as 35 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54. North wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. North wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 76. South southeast wind around 10 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 69. Southeast wind 5 to 10 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 88. South southeast wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 64. Light and variable wind becoming north 5 to 10 mph after midnight.
Friday
Mostly sunny, with a high near 77. North wind around 20 mph, with gusts as high as 35 mph.
Friday Night
Partly cloudy, with a low around 54. North wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday
Mostly sunny, with a high near 75. North wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Wimberley TX
 29.97°N 98.05°W (Elev. 1050 ft)
Last Update:
6:42 am CDT Oct 13, 2026
Forecast Valid:
10am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
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Additional Resources

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Chance of Precipitation