National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking a Couple of Storm Systems Across the Country

Showers, along with a few strong to severe thunderstorms, are expected from the Great Lakes, New England and southward into the Ohio and Tennessee Valleys. In the wake of this system, a stronger storm is expected to track from the Pacific Northwest, Plains and through the Eastern U.S. this weekend. Strong winds, showers and a larger drop in temperatures are expected this weekend into Monday. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

90°F

32°C

Humidity 34%
Wind Speed SW 12 mph
Barometer 29.74 in (1006.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 7 Nov 2:56 pm CST
Extended Forecast for

San Marcos TX

Fire Weather Watch November 9, 09:00am until November 9, 09:00pm
Click here for hazard details and duration
Fire Weather Watch

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. West wind around 5 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 57. North wind around 5 mph.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 88. North wind around 5 mph becoming calm in the morning.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. East wind 5 to 10 mph becoming north 15 to 20 mph in the evening. Winds could gust as high as 30 mph.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 69 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 36. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. North wind 5 to 10 mph becoming east in the afternoon.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 34. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 34 °F

    Clear

  • Veterans Day

    Veterans Day: Sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 73 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 90. West wind around 5 mph.
Tonight
Clear, with a low around 57. North wind around 5 mph.
Saturday
Sunny, with a high near 88. North wind around 5 mph becoming calm in the morning.
Saturday Night
Clear, with a low around 58. East wind 5 to 10 mph becoming north 15 to 20 mph in the evening. Winds could gust as high as 30 mph.
Sunday
Sunny, with a high near 69. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.
Sunday Night
Clear, with a low around 36. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 62. North wind 5 to 10 mph becoming east in the afternoon.
Monday Night
Clear, with a low around 34. Calm wind becoming south southwest around 5 mph after midnight.
Veterans Day
Sunny, with a high near 73. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Clear, with a low around 54.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
2:32 pm CST Nov 7, 2025
Forecast Valid:
3pm CST Nov 7, 2025-6pm CST Nov 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation