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.

A Few Clouds

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in (1016.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 25 Jun 10:56 pm CDT
Extended Forecast for

5 Miles SW San Marcos TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 72. Southeast wind around 5 mph becoming calm after midnight.

    Low: 72 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Light southeast wind becoming south southeast 5 to 10 mph in the morning.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. Southeast wind 5 to 10 mph becoming light south after midnight.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 93. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 93 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Widespread haze after 1pm. 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
    then Haze

  • Saturday Night

    Saturday Night: Widespread haze. Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Haze

  • Sunday

    Sunday: Widespread haze. Mostly sunny, with a high near 93. Light south wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 93 °F

    Haze

  • Sunday Night

    Sunday Night: Widespread haze. Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Haze

Detailed Forecast

Tonight
Mostly cloudy, with a low around 72. Southeast wind around 5 mph becoming calm after midnight.
Thursday
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 91. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 71. Southeast wind 5 to 10 mph becoming light south after midnight.
Friday
Mostly sunny, with a high near 93. Light south wind becoming south southeast 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph.
Saturday
Widespread haze after 1pm. Mostly sunny, with a high near 94. Light south wind becoming south southeast 5 to 10 mph in the morning.
Saturday Night
Widespread haze. Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Widespread haze. Mostly sunny, with a high near 93. Light south wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Widespread haze. Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Widespread haze. Mostly sunny, with a high near 96.
Monday Night
Widespread haze. Partly cloudy, with a low around 73.
Tuesday
Widespread haze. Mostly sunny, with a high near 97.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
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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:
11:32 pm CDT Jun 25, 2025
Forecast Valid:
11pm CDT Jun 25, 2025-6pm CDT Jul 2, 2025
 
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Additional Resources

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Chance of Precipitation