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Severe Thunderstorms and Locally Heavy Rain Today

Severe thunderstorms and locally heavy rain are possible today from the southern plains to the Ohio valley and Mid-Atlantic. Elsewhere, hot temperatures are expected to persist for the interior Pacific Northwest. Elevated to critical fire weather conditions will occur in northeast Montana. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

N/A

Humidity NA
Wind Speed SE 10 mph
Barometer NA
Dewpoint N/A
Visibility 7.00 mi
Last update 28 May 3:48 pm CDT
Extended Forecast for

San Marcos TX

Severe T-storm Watch until May 28, 10:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until May 28, 10:00pm

    NOW until
    10:00pm Sun

    Severe T-storm Watch

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Some of the storms could be severe.  Mostly cloudy, with a high near 96. Heat index values as high as 106. East southeast wind around 10 mph.

    Severe
    Thunderstorms

    High: 96 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 7pm. Some of the storms could be severe and produce heavy rainfall.  Cloudy, with a low around 70. East southeast wind 5 to 10 mph becoming north northeast after midnight.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Severe
    Thunderstorms

    Low: 70 °F

  • Memorial
    Day

    Memorial Day: Showers and thunderstorms likely.  Cloudy, with a high near 81. North northeast wind 5 to 10 mph becoming east in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely

    High: 81 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. East southeast wind around 5 mph becoming calm  after midnight.

    Chance
    T-storms

    Low: 66 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 85. Calm wind becoming east southeast around 5 mph in the morning.

    Chance
    T-storms

    High: 85 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68. East southeast wind around 5 mph becoming calm  in the evening.

    Chance
    T-storms

    Low: 68 °F

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 84. East wind 5 to 10 mph.

    Chance
    T-storms

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely.  Cloudy, with a low around 68. Southeast wind 5 to 10 mph.  Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 68 °F

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 96. Heat index values as high as 106. East southeast wind around 10 mph.
Tonight
Showers and thunderstorms likely, mainly after 7pm. Some of the storms could be severe and produce heavy rainfall. Cloudy, with a low around 70. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Memorial Day
Showers and thunderstorms likely. Cloudy, with a high near 81. North northeast wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East southeast wind around 5 mph becoming calm after midnight.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Calm wind becoming east southeast around 5 mph in the morning.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84. East wind 5 to 10 mph.
Wednesday Night
Showers and thunderstorms likely. Cloudy, with a low around 68. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Cloudy, with a high near 84. South southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 89.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
3:11 pm CDT May 28, 2017
4pm CDT May 28, 2017-6pm CDT Jun 4, 2017
 
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