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

Severe Thunderstorms in the Southern Plains; Heavy to Excessive Rainfall in South Central Texas

Widespread rain may produce flash flooding across the Southern Plains into the Ozarks today. Numerous instances of flash flooding are expected in south-central Texas, including the Hill Country. There will also be a risk of isolated severe thunderstorms across the southern Plains today, where an instance or two of severe wind, hail, or a brief tornado may occur. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

85°F

29°C

Humidity 53%
Wind Speed S 17 mph
Barometer 29.87 in (1010.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 Nov 2:56 pm CST
Extended Forecast for

3 Miles NNW Luling TX

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind around 15 mph, with gusts as high as 20 mph.

    High: 84 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers. Increasing clouds, with a low around 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. South wind around 5 mph becoming north northwest in the afternoon.

    High: 82 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 62. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 78. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 60. Northeast wind around 5 mph.

    Low: 60 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 79. East northeast wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind around 10 mph.

    Low: 65 °F

    Chance
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 78. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 78 °F

    Showers

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers. Increasing clouds, with a low around 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. South wind around 5 mph becoming north northwest in the afternoon.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 62. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 60. Northeast wind around 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 79. East northeast wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind around 10 mph.
Monday
Showers and possibly a thunderstorm. High near 78. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Luling TX
 29.73°N 97.65°W (Elev. 446 ft)
Last Update:
12:54 pm CST Nov 20, 2025
Forecast Valid:
3pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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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