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

64°F

18°C

Humidity 20%
Wind Speed SE 10 mph
Barometer 30.17 in (1021.2 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 11 Dec 10:56 am CST
Extended Forecast for

2 Miles SSW Lockhart TX

  • Today

    Today: Sunny, with a high near 70. South wind around 5 mph.

    High: 70 °F

    Sunny

  • Tonight

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

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 5 mph.

    High: 70 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 57. Calm wind.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 74. Calm wind becoming east northeast around 5 mph.

    High: 74 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 50. Light and variable wind becoming north 15 to 20 mph after midnight. Winds could gust as high as 25 mph.

    Low: 50 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 58. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 58 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 58. Northeast wind around 5 mph becoming south southeast in the afternoon.

    High: 58 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 70. South wind around 5 mph.
Tonight
Mostly clear, with a low around 47. Southwest wind around 5 mph.
Friday
Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind around 5 mph.
Friday Night
Increasing clouds, with a low around 57. Calm wind.
Saturday
Partly sunny, with a high near 74. Calm wind becoming east northeast around 5 mph.
Saturday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 50. Light and variable wind becoming north 15 to 20 mph after midnight. Winds could gust as high as 25 mph.
Sunday
Mostly cloudy, with a high near 58. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 37. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 58. Northeast wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lockhart TX
 29.86°N 97.7°W (Elev. 545 ft)
11:44 am CST Dec 11, 2025
11am CST Dec 11, 2025-6pm CST Dec 17, 2025
 
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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