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

Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies; Heavy Rain in Guam

A storm system moving over the Rockies today will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Heavy snow expected from northwestern Wyoming into southern Montana. Ongoing heavy showers and thunderstorms from Invest 96W could result in localized flash flooding, particularly in central or southern Guam early this morning. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

93°F

34°C

Humidity 31%
Wind Speed Calm
Barometer 30.00 in (1015.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 15 Oct 1:56 pm CDT
Extended Forecast for

Mountain City TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. East northeast wind around 5 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. East northeast wind around 5 mph becoming calm after midnight.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Southeast wind around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91. Light south southeast wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 67. South southeast wind 5 to 10 mph.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South southwest wind 5 to 10 mph becoming north northwest after midnight.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 91. East northeast wind around 5 mph.
Tonight
Clear, with a low around 59. East northeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 88. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 62. Southeast wind around 5 mph.
Friday
Sunny, with a high near 91. Light south southeast wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 67. South southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 63. South southwest wind 5 to 10 mph becoming north northwest after midnight.
Sunday
Sunny, with a high near 87. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 57.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.02°N 97.89°W (Elev. 797 ft)
Last Update:
1:46 pm CDT Oct 15, 2025
Forecast Valid:
2pm CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
Forecast Discussion
 
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