National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

65°F

18°C

Humidity 97%
Wind Speed Calm
Barometer 29.87 in (1010.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 15 May 7:56 am CDT
Extended Forecast for

San Marcos TX

  • Today

    Today: Increasing clouds, with a high near 91. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 83. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. West southwest wind 5 to 10 mph becoming north in the afternoon.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66. East northeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 66 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 93. West southwest wind 5 to 10 mph.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70. East southeast wind 5 to 10 mph becoming south after midnight.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. South wind 5 to 10 mph.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 91. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 83. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. West southwest wind 5 to 10 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 66. East northeast wind 5 to 10 mph becoming south southwest after midnight.
Saturday
Sunny, with a high near 93. West southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 70. East southeast wind 5 to 10 mph becoming south after midnight.
Sunday
Sunny, with a high near 93. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 71.
Monday
Mostly sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 95.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
7:44 am CDT May 15, 2024
Forecast Valid:
8am CDT May 15, 2024-6pm CDT May 21, 2024
 
Forecast Discussion
 
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Additional Resources

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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