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 and Breezy

83°F

28°C

Humidity 57%
Wind Speed SE 25 G 30 mph
Barometer 29.82 in (1009.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 2 Apr 5:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Slight Chance
    T-storms then
    Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 86. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 86 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Increasing clouds, 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%.

    High: 76 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. North northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 65. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Cloudy, with a low around 50. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 69. North northeast wind around 10 mph.

    High: 69 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. North northeast wind around 5 mph.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 86. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
A 50 percent chance of showers and thunderstorms. Increasing clouds, 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%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. 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, mainly before 1pm. Mostly cloudy, with a high near 65. 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 50. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 69. North northeast wind around 10 mph.
Monday Night
Partly cloudy, with a low around 47. North northeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
Mostly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Mostly cloudy, with a low around 57.
Thursday
Mostly cloudy, with a high near 77.
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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:
5:36 pm CDT Apr 2, 2026
Forecast Valid:
6pm CDT Apr 2, 2026-6pm CDT Apr 9, 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