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

55°F

13°C

Humidity 90%
Wind Speed SW 8 mph
Barometer 29.84 in (1010.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 25 Feb 2:56 am CST
Extended Forecast for

Mountain City TX

  • Overnight

    Overnight: Mostly clear, with a low around 53. South southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89. South southwest wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. East wind around 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. East wind around 5 mph becoming south after midnight.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57. South wind 5 to 10 mph.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 53. South southwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 58. South southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 89. South southwest wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 82. East wind around 5 mph.
Friday Night
Mostly clear, with a low around 54. East wind around 5 mph becoming south after midnight.
Saturday
Sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 57. South wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 79.
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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:
12:46 am CST Feb 25, 2026
Forecast Valid:
3am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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