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.

Mostly Cloudy

81°F

27°C

Humidity 62%
Wind Speed S 14 mph
Barometer 29.97 in (1014.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Nov 11:56 am CST
Extended Forecast for

Lockhart TX

  • This Afternoon

    This Afternoon: A chance of showers, with thunderstorms also possible after 3pm.  Mostly cloudy, with a high near 83. South wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    High: 83 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am.  Mostly cloudy, with a low around 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before noon.  Cloudy through mid morning, then gradual clearing, with a high near 81. South southwest wind around 5 mph becoming north in the afternoon.

    High: 81 °F

    Chance
    T-storms

  • 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 30%.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms.  Mostly 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 78. 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: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 64. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Chance
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm.  High near 77. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 77 °F

    Showers

Detailed Forecast

This Afternoon
A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 83. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tonight
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of showers and thunderstorms, mainly before noon. Cloudy through mid morning, then gradual clearing, with a high near 81. South southwest wind around 5 mph becoming north 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 30%.
Saturday
A chance of showers and thunderstorms. Mostly 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 78. 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 64. South southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Showers and possibly a thunderstorm. High near 77. South wind 5 to 15 mph becoming west 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 77.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
12:44 pm CST Nov 20, 2025
12pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
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Additional Resources

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