Tracking Two Storms Impacting the Northern U.S. Through Thanksgiving and into This Weekend

Heavy lake effect snow and gusty winds, including some local blizzard conditions, will continue into Thanksgiving Day across the Great Lakes then lingering through Friday night for Lakes Erie and Ontario. Confidence is increasing for another winter storm to develop over the northern and central Rockies Friday and track across the central Plains through the Midwest and Great Lakes this weekend. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

52°F

11°C

Humidity 53%
Wind Speed NE 5 mph
Barometer 30.34 in (1027.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 26 Nov 10:56 pm CST
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Mostly clear, with a low around 43. North northeast wind around 5 mph.

    Low: 43 °F

    Mostly Clear

  • Thanksgiving Day

    Thanksgiving Day: Partly sunny, with a high near 65. East northeast wind around 5 mph.

    High: 65 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49. Northeast wind around 5 mph becoming calm.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 66. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Cloudy

  • Friday Night

    Friday Night: A chance of showers, with thunderstorms also possible after 9pm.  Cloudy, with a low around 58. Southeast wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 74. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 43. West wind 5 to 15 mph becoming north in the evening. Winds could gust as high as 20 mph.  Chance of precipitation is 30%.

    Low: 43 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 54. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after midnight.  Mostly cloudy, with a low around 40. North northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 43. North northeast wind around 5 mph.
Thanksgiving Day
Partly sunny, with a high near 65. East northeast wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 49. Northeast wind around 5 mph becoming calm.
Friday
Cloudy, with a high near 66. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers, with thunderstorms also possible after 9pm. Cloudy, with a low around 58. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. West wind 5 to 15 mph becoming north in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 54. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 40. North northeast wind around 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers. Cloudy, with a high near 48.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 60.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
11:14 pm CST Nov 26, 2025
11pm CST Nov 26, 2025-6pm CST Dec 3, 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