Winter Storm in the Central Appalachians through the Northeast; Heavy Snow in the Great Basin and Rockies

A winter storm will impact the central Appalachians to the Northeast through the night. Accumulating snow is expected for interior New England and the northern Mid-Atlantic. Scattered showers and occasional thunderstorms will persist across Florida and the Southeast coast. Locally heavy mountain snow is expected in the Great Basin and Rockies over the next couple of days. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

40°F

4°C

Humidity 68%
Wind Speed Calm
Barometer 30.08 in (1018.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 2 Dec 9:56 pm CST
Extended Forecast for

5 Miles SW San Marcos TX

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64. South wind around 5 mph.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 49. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 20 mph.

    Low: 49 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers.  Cloudy, with a high near 53. North wind around 15 mph, with gusts as high as 30 mph.

    High: 53 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers.  Cloudy, with a low around 41. North wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before noon.  Cloudy, with a high near 53. North wind around 5 mph becoming east in the afternoon.

    High: 53 °F

    Chance
    Showers then
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Calm wind becoming west around 5 mph after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. West wind around 5 mph becoming south southwest in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. South wind around 5 mph becoming west after midnight.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. Calm wind becoming south southwest around 5 mph after midnight.
Wednesday
Partly sunny, with a high near 64. South wind around 5 mph.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 49. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 20 mph.
Thursday
A 40 percent chance of showers. Cloudy, with a high near 53. North wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
A 40 percent chance of showers. Cloudy, with a low around 41. North wind 5 to 10 mph, with gusts as high as 25 mph.
Friday
A 30 percent chance of showers before noon. Cloudy, with a high near 53. North wind around 5 mph becoming east in the afternoon.
Friday Night
Mostly cloudy, with a low around 44. Calm wind becoming west around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 69. West wind around 5 mph becoming south southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 46. South wind around 5 mph becoming west after midnight.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW San Marcos TX
 29.83°N 97.99°W (Elev. 676 ft)
10:32 pm CST Dec 2, 2025
10pm CST Dec 2, 2025-6pm CST Dec 9, 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