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

Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

60°F

16°C

Humidity 25%
Wind Speed SE 7 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 11 Dec 9:56 am CST
Extended Forecast for

Mountain City TX

  • Today

    Today: Sunny, with a high near 68. South wind 5 to 10 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Southwest wind around 5 mph.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. Southwest wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. South southeast wind around 5 mph becoming north after midnight.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 72. North wind around 5 mph becoming south southeast in the afternoon.

    High: 72 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. Southeast wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 59. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 59 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60. Northeast wind around 5 mph becoming south southeast in the afternoon.

    High: 60 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 68. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 47. Southwest wind around 5 mph.
Friday
Sunny, with a high near 76. Southwest wind 5 to 10 mph becoming south southeast in the afternoon.
Friday Night
Increasing clouds, with a low around 52. South southeast wind around 5 mph becoming north after midnight.
Saturday
Partly sunny, with a high near 72. North wind around 5 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Southeast wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
Partly sunny, with a high near 59. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 39. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 60. Northeast wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
Mostly cloudy, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 75.
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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:
6:42 am CST Dec 11, 2025
Forecast Valid:
10am CST Dec 11, 2025-6pm CST Dec 17, 2025
 
Forecast Discussion
 
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Additional Resources

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