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.

Overcast

59°F

15°C

Humidity 96%
Wind Speed SW 6 mph
Barometer 30.00 in (1015.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Feb 5:56 am CST
Extended Forecast for

Mountain City TX

  • Today

    Today: Patchy fog between 7am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. South wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. South southwest wind around 5 mph.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 61. South wind 5 to 10 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 84. South southwest wind around 5 mph becoming north northeast in the afternoon.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 80. Southeast wind 5 to 10 mph becoming north in the afternoon.

    High: 80 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. East northeast wind around 5 mph becoming northwest after midnight.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog between 7am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 81. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 58. South wind 5 to 10 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 81. South southwest wind around 5 mph.
Wednesday Night
Increasing clouds, with a low around 61. South wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 84. South southwest wind around 5 mph becoming north northeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. Southeast wind around 5 mph.
Friday
Mostly cloudy, with a high near 80. Southeast wind 5 to 10 mph becoming north in the afternoon.
Friday Night
Mostly cloudy, with a low around 55. East northeast wind around 5 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 76. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.04°N 97.89°W (Elev. 837 ft)
Last Update:
5:44 am CST Feb 17, 2026
Forecast Valid:
6am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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