Severe Weather and Flooding Expected Across the Southern Plains, Mid South, & Ohio Valley

Strong to severe thunderstorms, including tornadoes, are expected late today and tonight and continuing through Friday from the southern Plains to the Mid South and Ohio Valley, where heavy rainfall and flooding are also likely. Elsewhere, chilly temperatures and heavy mountain snowfall will persist for parts of the West while very mild air prevails along the East Coast. Read More >

Hazardous Weather Conditions

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 67%
Wind Speed S 15 mph
Barometer 29.82 in (1009.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 23 Mar 5:56 pm CDT
Extended Forecast for

4 Miles SW San Marcos TX

  • Tonight

    Tonight: Increasing clouds, with a low around 67. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Increasing
    Clouds

    Low: 67 °F

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly between 10am and 1pm.  Cloudy, then gradual clearing during the afternoon, with a high near 84. South wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.

    Chance
    Showers

    High: 84 °F

  • Friday
    Night

    Friday Night: Clear, with a low around 50. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Clear

    Low: 50 °F

  • Saturday

    Saturday: Sunny, with a high near 80. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Sunny

    High: 80 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 52. Southeast wind around 5 mph.

    Mostly Clear

    Low: 52 °F

  • Sunday

    Sunday: Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.

    Partly Sunny

    High: 78 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 54. East wind 5 to 10 mph becoming north after midnight.

    Partly Cloudy

    Low: 54 °F

  • Monday

    Monday: Mostly cloudy, with a high near 77. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    High: 77 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 57 °F

Detailed Forecast

Tonight
Increasing clouds, with a low around 67. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 84. South wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Clear, with a low around 50. West wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 80. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 52. Southeast wind around 5 mph.
Sunday
Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 54. East wind 5 to 10 mph becoming north after midnight.
Monday
Mostly cloudy, with a high near 77. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 72.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 72.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Thursday
A 20 percent chance of showers and thunderstorms. Cloudy, with a high near 82.
Click Map For Forecast
Point Forecast:
4 Miles SW San Marcos TX
 29.86°N 97.99°W (Elev. 748 ft)
2:08 pm CDT Mar 23, 2023
6pm CDT Mar 23, 2023-6pm CDT Mar 30, 2023
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database