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

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

78°F

26°C

Humidity 97%
Wind Speed SE 3 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Sep 8:56 am CDT
Extended Forecast for

San Marcos TX

  • Today

    Today: Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 72. South southeast wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    Monday: Sunny, with a high near 96. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. East wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 95. South wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95. South southeast wind around 5 mph.

    High: 95 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming south southeast around 5 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 72. South southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 96. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 73. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 73. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 95. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 95. South southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 73.
Friday
Mostly sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 73.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
8:38 am CDT Sep 15, 2024
Forecast Valid:
9am CDT Sep 15, 2024-6pm CDT Sep 21, 2024
 
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Additional Resources

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High Temperature

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Chance of Precipitation