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

70°F

21°C

Humidity 93%
Wind Speed SE 9 mph
Barometer 29.94 in (1012.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 5 Mar 4:56 am CST
Extended Forecast for

5 Miles SSE Wimberley TX

  • Today

    Today: A 20 percent chance of showers before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Increasing clouds, with a low around 65. South southeast wind around 15 mph, with gusts as high as 30 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 81. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then a chance of showers after midnight. Mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 80. South southeast wind around 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 80 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 56. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 56 °F

    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 68. North northeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 68 °F

    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming east southeast after midnight.

    Low: 60 °F

    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers after 3am. Increasing clouds, with a low around 65. South southeast wind around 15 mph, with gusts as high as 30 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 81. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after midnight. Mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday
Showers likely and possibly a thunderstorm before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 80. South southeast wind around 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm. Low around 56. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 68. North northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming east southeast after midnight.
Monday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 65.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 75.
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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:
4:32 am CST Mar 5, 2026
Forecast Valid:
5am CST Mar 5, 2026-6pm CDT Mar 11, 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