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

98°F

37°C

Humidity 12%
Wind Speed W 13 G 21 mph
Barometer 29.59 in (1001.1 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 15 Mar 4:56 pm CDT
Extended Forecast for

3 Miles WSW Staples TX

Wind Advisory March 15, 05:39pm until March 16, 05:00am
Red Flag Warning March 15, 05:39pm until March 16, 08:00pm
Click here for hazard details and duration
Wind Advisory
Red Flag Warning
  •  
    Wind Advisory March 15, 05:39pm until March 16, 05:00am
    Red Flag Warning March 15, 05:39pm until March 16, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 42 °F

    Haze and
    Windy

  • Monday

    Monday: Mostly sunny, with a high near 58. North wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. North northeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 35 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 67. Light east southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. South southeast wind 5 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. South wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. South southeast wind around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Southwest wind 5 to 10 mph.

    High: 85 °F

    Sunny

Detailed Forecast

Tonight
Widespread haze before 1am. Mostly clear, with a low around 42. Windy, with a north wind 20 to 30 mph, with gusts as high as 45 mph.
Monday
Mostly sunny, with a high near 58. North wind 15 to 20 mph, with gusts as high as 35 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. North northeast wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 67. Light east southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 43. South southeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 78. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 52. South southeast wind around 5 mph.
Thursday
Sunny, with a high near 85. Southwest wind 5 to 10 mph.
Thursday Night
Clear, with a low around 56. South wind around 5 mph.
Friday
Sunny, with a high near 89.
Friday Night
Clear, with a low around 59.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Staples TX
 29.77°N 97.88°W (Elev. 525 ft)
Last Update:
5:32 pm CDT Mar 15, 2026
Forecast Valid:
5pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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