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.

Overcast

72°F

22°C

Humidity 84%
Wind Speed SE 10 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 3 Apr 7:56 am CDT
Extended Forecast for

5 Miles SSE Wimberley TX

  • Today

    Today: Mostly cloudy, with a high near 86. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 86 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 76. South southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. North northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Mostly cloudy, with a high near 64. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Cloudy, with a low around 51. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 67. Northeast wind around 10 mph.

    High: 67 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. Northeast wind around 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 69. North northeast wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 69 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 86. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. High near 76. South southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. North northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 64. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers. Cloudy, with a low around 51. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 67. Northeast wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 48. Northeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 69. North northeast wind 5 to 10 mph becoming east southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly cloudy, with a high near 75.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wimberley TX
 29.92°N 98.07°W (Elev. 1047 ft)
Last Update:
6:42 am CDT Apr 3, 2026
Forecast Valid:
8am CDT Apr 3, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation