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.

Fair

46°F

8°C

Humidity 54%
Wind Speed SW 8 mph
Barometer 30.21 in (1022.5 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 6 Feb 4:56 am CST
Extended Forecast for

5 Miles WSW Martindale TX

  • Today

    Today: Sunny, with a high near 81. West southwest wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 48. Calm wind becoming north northwest around 5 mph after midnight.

    Low: 48 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 80. North wind around 5 mph becoming southeast in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm after midnight.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 76. Calm wind becoming south around 5 mph in the morning.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 55. South wind around 5 mph.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 58. South southeast wind 5 to 10 mph.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers. Partly sunny, with a high near 77. South wind 5 to 10 mph.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 81. West southwest wind 5 to 10 mph becoming light and variable in the afternoon.
Tonight
Clear, with a low around 48. Calm wind becoming north northwest around 5 mph after midnight.
Saturday
Sunny, with a high near 80. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 76. Calm wind becoming south around 5 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 55. South wind around 5 mph.
Monday
Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58. South southeast wind 5 to 10 mph.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 77. South wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Martindale TX
 29.81°N 97.91°W (Elev. 581 ft)
Last Update:
4:32 am CST Feb 6, 2026
Forecast Valid:
5am CST Feb 6, 2026-6pm CST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation