Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

91°F

33°C

Humidity 54%
Wind Speed S 18 G 26 mph
Barometer 29.83 in (1009.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 18 May 3:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

  • Tonight

    Tonight: Increasing clouds, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 88. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rainfall.  Increasing clouds, with a low around 70. Southeast wind 5 to 15 mph becoming east northeast after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

    Low: 70 °F

    Heavy Rain

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 83. East northeast wind 5 to 10 mph becoming southeast in the morning.  Chance of precipitation is 60%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph.  Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm.  High near 81. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%.

    High: 81 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 69. South southeast wind around 5 mph.  Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 83. South wind 5 to 10 mph.  Chance of precipitation is 60%.

    High: 83 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 69. Southeast wind around 5 mph.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 88. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 70. Southeast wind 5 to 15 mph becoming east northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. East northeast wind 5 to 10 mph becoming southeast in the morning. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 81. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southeast wind around 5 mph. Chance of precipitation is 70%.
Friday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind around 5 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 81. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Memorial Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wimberley TX
 29.92°N 98.07°W (Elev. 1047 ft)
2:46 pm CDT May 18, 2026
4pm CDT May 18, 2026-6pm CDT May 25, 2026
 
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Additional Resources

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