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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

76°F

24°C

Humidity 79%
Wind Speed S 15 G 20 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 17 Nov 8:56 pm CST
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Increasing clouds, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 87. South wind around 10 mph, with gusts as high as 20 mph.

    High: 87 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 67. South wind 5 to 10 mph.

    Low: 67 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 86. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers and
    Areas Fog

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Widespread dense fog, mainly before 7am. Otherwise, mostly cloudy, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely and
    Dense Fog

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. South southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 80. West northwest wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers after midnight. Mostly clear, with a low around 54. North wind around 5 mph.

    Low: 54 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 87. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 67. South wind 5 to 10 mph.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 86. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
Showers likely and possibly a thunderstorm. Widespread dense fog, mainly before 7am. Otherwise, mostly cloudy, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. South southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 80. West northwest wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of showers after midnight. Mostly clear, with a low around 54. North wind around 5 mph.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 74.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 72.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
7:52 pm CST Nov 17, 2025
Forecast Valid:
9pm CST Nov 17, 2025-6pm CST Nov 24, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

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Chance of Precipitation