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

81°F

27°C

Humidity 34%
Wind Speed SW 14 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 8 Feb 3:56 pm CST
Extended Forecast for

Mountain City TX

  • Tonight

    Tonight: Partly cloudy, with a low around 53. South southwest wind around 5 mph.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 58. South wind 5 to 10 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 58. South wind around 5 mph.

    Low: 58 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. South southeast wind around 5 mph becoming east northeast in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming south after midnight.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. South wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. South wind around 5 mph.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. South southwest wind around 5 mph.
Monday
Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 58. South wind 5 to 10 mph.
Tuesday
Cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 58. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 78. South southeast wind around 5 mph becoming east northeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming south after midnight.
Thursday
Mostly sunny, with a high near 82. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 58. South wind around 5 mph.
Friday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 81.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 76.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.04°N 97.89°W (Elev. 837 ft)
Last Update:
3:46 pm CST Feb 8, 2026
Forecast Valid:
4pm CST Feb 8, 2026-6pm CST Feb 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation