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Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

62°F

17°C

Humidity 100%
Wind Speed NE 3 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 9 Mar 5:56 am CDT
Extended Forecast for

5 Miles SSE Wimberley TX

Dense Fog Advisory until March 9, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until March 9, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Today

    High: 82 °F

    Patchy
    Drizzle and
    Areas Dense
    Fog then
    Patchy Fog

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 61. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 80. South southwest wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Clear, with a low around 47. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 69. North wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46. East wind around 5 mph becoming south southwest after midnight.

    Low: 46 °F

    Clear

Detailed Forecast

Today
Patchy drizzle before 10am. Areas of dense fog before 1pm. Otherwise, mostly cloudy, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 61. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 80. South southwest wind 5 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Clear, with a low around 47. North wind around 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 69. North wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 46. East wind around 5 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 80. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 52.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 87.
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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:
6:44 am CDT Mar 9, 2026
Forecast Valid:
6am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation