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

73°F

23°C

Humidity 27%
Wind Speed NE 12 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 7 Apr 5:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

  • Tonight

    Tonight: Partly cloudy, with a low around 52. East wind around 5 mph becoming calm after midnight.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. Calm wind becoming southeast around 5 mph in the morning.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 58. South southeast wind around 5 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. East southeast wind 5 to 10 mph.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 62. Southeast wind 5 to 10 mph.

    Low: 62 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. East southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 66. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 52. East wind around 5 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 78. Calm wind becoming southeast around 5 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 58. South southeast wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. East southeast wind 5 to 10 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 62. Southeast wind 5 to 10 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. East southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 66. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 80.
Sunday Night
A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 67.
Monday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wimberley TX
 29.92°N 98.07°W (Elev. 1047 ft)
Last Update:
5:32 pm CDT Apr 7, 2026
Forecast Valid:
6pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026
 
Forecast Discussion
 
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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