National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

91°F

33°C

Humidity 35%
Wind Speed E 9 mph
Barometer 30.10 in (1018.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 9 Oct 5:56 pm CDT
Extended Forecast for

Mountain City TX

  • Tonight

    Tonight: Mostly clear, with a low around 63. East northeast wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. East northeast wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 56. Northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. East southeast wind around 5 mph becoming south southwest after midnight.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. South southeast wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South southeast wind around 5 mph becoming calm after midnight.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. East northeast wind 5 to 10 mph.
Friday
Sunny, with a high near 92. East northeast wind 5 to 10 mph.
Friday Night
Clear, with a low around 56. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 59. East southeast wind around 5 mph becoming south southwest after midnight.
Sunday
Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 60. South wind around 5 mph.
Columbus Day
Sunny, with a high near 92. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 65. South southeast wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.02°N 97.89°W (Elev. 797 ft)
Last Update:
6:02 pm CDT Oct 9, 2025
Forecast Valid:
6pm CDT Oct 9, 2025-6pm CDT Oct 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation