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

54°F

12°C

Humidity 34%
Wind Speed E 5 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 2 Dec 4:56 pm CST
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Mostly clear, with a low around 37. East southeast wind around 5 mph becoming calm.

    Low: 37 °F

    Mostly Clear

  • Wednesday

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

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 48. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 20 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °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 40. North wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Chance
    Showers

  • Friday

    Friday: A 20 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

    Slight Chance
    Showers then
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. East southeast wind around 5 mph becoming calm.

    Low: 43 °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 45. South wind around 5 mph becoming west after midnight.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. East southeast wind around 5 mph becoming calm.
Wednesday
Partly sunny, with a high near 64. South wind around 5 mph.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 48. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.
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 40. North wind 5 to 10 mph, with gusts as high as 25 mph.
Friday
A 20 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 43. East southeast wind around 5 mph becoming calm.
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 45. South wind around 5 mph becoming west after midnight.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.91°W (Elev. 597 ft)
5:02 pm CST Dec 2, 2025
5pm 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