Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

52°F

11°C

Humidity 66%
Wind Speed S 14 mph
Barometer 30.17 in (1021.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 29 Jan 9:56 am CST
Extended Forecast for

Mountain City TX

  • Today

    Today: Sunny, with a high near 67. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 55. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 55 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43. North wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 53. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. Southwest wind around 5 mph.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 60. West wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 67. South southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Partly sunny, with a high near 55. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 27. North wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 43. North wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 19. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 53. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 31. Southwest wind around 5 mph.
Monday
Mostly sunny, with a high near 60. West wind 5 to 10 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 46.
Tuesday
Mostly cloudy, with a high near 69.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Mountain City TX
 30.04°N 97.89°W (Elev. 837 ft)
8:44 am CST Jan 29, 2026
10am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
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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