Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in (1014.4 mb)
Dewpoint 68°F (20°C)
Visibility 2.00 mi
Last update 21 Nov 7:56 am CST
Extended Forecast for

2 Miles W San Marcos TX

  • Today

    Today: A 30 percent chance of showers and thunderstorms before 3pm.  Patchy fog before 9am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. West northwest wind around 5 mph becoming north in the afternoon.

    High: 80 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 60 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers.  Mostly cloudy, with a high near 76. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.

    High: 76 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, with thunderstorms also possible after midnight.  Mostly cloudy, with a low around 66. South southeast wind around 10 mph.  Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: Showers and possibly a thunderstorm.  High near 77. South wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 77 °F

    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. West northwest wind around 5 mph becoming calm.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West northwest wind around 5 mph becoming north in the afternoon.

    High: 80 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms before 3pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. West northwest wind around 5 mph becoming north in the afternoon.
Tonight
Mostly cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 76. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers. Increasing clouds, with a low around 60. Northeast wind around 5 mph.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 76. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 66. South southeast wind around 10 mph. Chance of precipitation is 40%.
Monday
Showers and possibly a thunderstorm. High near 77. South wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday Night
Mostly clear, with a low around 53. West northwest wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 80. West northwest wind around 5 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 40.
Thanksgiving Day
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W San Marcos TX
 29.88°N 97.97°W (Elev. 699 ft)
6:44 am CST Nov 21, 2025
8am CST Nov 21, 2025-6pm CST Nov 27, 2025
 
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Additional Resources

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Hourly Weather Forecast

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