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

Tracking Atmospheric River for California; Record Temperatures Further East

An atmospheric river will bring gusty to high winds, moderate to heavy rainfall, and potential flooding to California today through Saturday. Heavy snow will be possible over the Sierra Nevada mountains into Friday associated with this atmospheric river. East of these impacts dozens of record high maximum and high minimum temperatures may be broken or tied today and Friday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

84°F

29°C

Humidity 41%
Wind Speed S 13 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Nov 3:56 pm CST
Extended Forecast for

2 Miles NNE San Marcos TX

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Partly sunny, then gradually becoming sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. South wind 5 to 10 mph.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly clear, with a low around 60. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Partly sunny, then gradually becoming sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 61. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 61. South wind around 5 mph.
Sunday
Sunny, with a high near 87. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 65. South wind around 5 mph.
Monday
Mostly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 67. South wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 87.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 85.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE San Marcos TX
 29.9°N 97.91°W (Elev. 640 ft)
Last Update:
2:44 pm CST Nov 13, 2025
Forecast Valid:
4pm CST Nov 13, 2025-6pm CST Nov 20, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation