Snow Squalls in the Northeast U.S. on Thursday; Heavy Rain Along the Gulf Coast

An arctic cold front will move through the Great Lakes and Northeast on Thursday, bringing moderate to heavy snow, strong winds, and possible whiteout conditions through Thursday afternoon. A storm system interacting with Gulf moisture will bring moderate to heavy rainfall to the western and central Gulf Coast on Thursday. Isolated instances of flash flooding will be possible. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

55°F

13°C

Humidity 100%
Wind Speed NE 6 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 55°F (13°C)
Visibility 1.00 mi
Wind Chill54°F (12°C)
Last update 3 Dec 7:56 pm CST
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: A 30 percent chance of showers.  Areas of fog.  Otherwise, cloudy, with a low around 51. Light east northeast wind becoming north 5 to 10 mph after midnight.

    Low: 51 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: A 50 percent chance of showers before 3pm.  Cloudy, with a temperature falling to around 48 by 5pm. North wind 10 to 15 mph, with gusts as high as 30 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight.  Cloudy, with a low around 43. North wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Cloudy then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before noon.  Cloudy, with a high near 54. North wind around 5 mph becoming calm  in the morning.

    High: 54 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Southeast wind around 5 mph becoming calm.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49. South southwest wind 5 to 10 mph becoming northwest after midnight.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. North wind around 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. North wind 5 to 10 mph.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers. Areas of fog. Otherwise, cloudy, with a low around 51. Light east northeast wind becoming north 5 to 10 mph after midnight.
Thursday
A 50 percent chance of showers before 3pm. Cloudy, with a temperature falling to around 48 by 5pm. North wind 10 to 15 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 30 percent chance of showers after midnight. Cloudy, with a low around 43. North wind 5 to 15 mph, with gusts as high as 25 mph.
Friday
A 20 percent chance of showers before noon. Cloudy, with a high near 54. North wind around 5 mph becoming calm in the morning.
Friday Night
Mostly cloudy, with a low around 45. Southeast wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 49. South southwest wind 5 to 10 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 67. North wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 38. North wind 5 to 10 mph.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
7:44 pm CST Dec 3, 2025
8pm CST Dec 3, 2025-6pm CST Dec 10, 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