Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

87°F

31°C

Humidity 59%
Wind Speed SE 13 mph
Barometer 29.81 in (1008.6 mb)
Dewpoint 71°F (22°C)
Visibility 3.00 mi
Heat Index93°F (34°C)
Last update 22 May 5:56 pm CDT
Extended Forecast for

5 Miles SSE Wimberley TX

Flood Watch May 22, 07:00pm until May 25, 07:00pm
Click here for hazard details and duration
Flood Watch
  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Increasing clouds, with a low around 69. Southeast wind around 5 mph becoming southwest after midnight.

    Low: 69 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a high near 82. South southeast wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 67. East northeast wind around 5 mph becoming south after midnight.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 82. East northeast wind around 5 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 67. East wind around 5 mph becoming calm  in the evening.

    Low: 67 °F

    Slight Chance
    T-storms

  • Memorial Day

    Memorial Day: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 84. East northeast wind around 5 mph.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. East wind around 5 mph becoming calm  in the evening.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 69. Southeast wind around 5 mph.  Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Increasing clouds, with a low around 69. Southeast wind around 5 mph becoming southwest after midnight.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 82. South southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. East northeast wind around 5 mph becoming south after midnight.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82. East northeast wind around 5 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening.
Memorial Day
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. East northeast wind around 5 mph.
Monday Night
Mostly clear, with a low around 67. East wind around 5 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 70%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 72.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Wimberley TX
 29.92°N 98.07°W (Elev. 1047 ft)
6:12 pm CDT May 22, 2026
6pm CDT May 22, 2026-6pm CDT May 29, 2026
 
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