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

71°F

22°C

Humidity 66%
Wind Speed Calm
Barometer 30.09 in (1018.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Sep 12:56 am CDT
Extended Forecast for

5 Miles SW San Marcos TX

  • Overnight

    Overnight: Clear, with a low around 68. Calm wind.

    Low: 68 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70. East southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Light and variable wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 95. Light and variable wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 95 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. South southwest wind 5 to 10 mph.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm after midnight.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 68. Calm wind.
Thursday
Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 70. East southeast wind 5 to 10 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 95. Light and variable wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 68. Southeast wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 95. Light and variable wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 70. South southwest wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 94. Light south wind becoming south southeast 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW San Marcos TX
 29.83°N 97.99°W (Elev. 676 ft)
Last Update:
12:44 am CDT Sep 11, 2025
Forecast Valid:
1am CDT Sep 11, 2025-6pm CDT Sep 17, 2025
 
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Additional Resources

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