Strong to Severe Thunderstorms May Bring Excessive Rainfall to the Southern U.S. Saturday

Marginally severe thunderstorms capable of strong wind gusts and hail will be possible Saturday across much of central Texas, and during the afternoon across parts of the Southeast U.S. Heavy rain from thunderstorms may bring isolated flash and urban flooding, along with new and renewed rises on rivers and streams throughout East Texas and the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

72°F

22°C

Humidity 73%
Wind Speed N 9 mph
Barometer 30.02 in (1016.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Apr 9:56 pm CDT
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Cloudy, with a low around 64. North northeast wind 5 to 10 mph.

    Cloudy

    Low: 64 °F

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm.  Cloudy, with a high near 74. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    T-storms then
    T-storms
    Likely

    High: 74 °F

  • Saturday
    Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Low around 52. North northeast wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    T-storms then
    Showers

    Low: 52 °F

  • Sunday

    Sunday: Mostly cloudy, with a high near 65. North wind around 20 mph, with gusts as high as 35 mph.

    Mostly Cloudy

    High: 65 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 49. North northeast wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Mostly Cloudy

    Low: 49 °F

  • Monday

    Monday: Partly sunny, with a high near 71. North northeast wind 5 to 10 mph becoming southeast in the afternoon.

    Partly Sunny

    High: 71 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 53. Southeast wind around 10 mph.

    Mostly Clear

    Low: 53 °F

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Partly Sunny

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 62. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy

    Low: 62 °F

Detailed Forecast

Tonight
Cloudy, with a low around 64. North northeast wind 5 to 10 mph.
Saturday
A slight chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Cloudy, with a high near 74. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 52. North northeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Mostly cloudy, with a high near 65. North wind around 20 mph, with gusts as high as 35 mph.
Sunday Night
Mostly cloudy, with a low around 49. North northeast wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Monday
Partly sunny, with a high near 71. North northeast wind 5 to 10 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 53. Southeast wind around 10 mph.
Tuesday
Partly sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 62. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 82.
Wednesday Night
Mostly cloudy, with a low around 67.
Thursday
Mostly cloudy, with a high near 83.
Thursday Night
Mostly cloudy, with a low around 69.
Friday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
10:41 pm CDT Apr 19, 2024
10pm CDT Apr 19, 2024-6pm CDT Apr 26, 2024
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database