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

87°F

31°C

Humidity 42%
Wind Speed SE 18 G 28 mph
Barometer 29.91 in (1012.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 31 Mar 4:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

  • Tonight

    Tonight: Increasing clouds, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 88. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 88 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 65. South southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Slight Chance
    T-storms

  • Friday

    Friday: 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

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 75. South wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Cloudy, with a low around 51. North wind around 15 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 88. South wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 65. South southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly cloudy, with a high near 86. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 75. South wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.
Saturday Night
A 50 percent chance of showers. Cloudy, with a low around 51. North wind around 15 mph, with gusts as high as 30 mph.
Sunday
A 30 percent chance of showers. Cloudy, with a high near 65.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Mostly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:46 pm CDT Mar 31, 2026
Forecast Valid:
5pm CDT Mar 31, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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