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Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

100°F

38°C

Humidity 39%
Wind Speed S 9 mph
Barometer 29.67 in (1003.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index108°F (42°C)
Last update 14 May 3:56 pm CDT
Extended Forecast for

2 Miles WNW San Marcos Municipal Airport TX

Extreme Heat Warning May 14, 04:51pm until May 14, 09:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning May 14, 04:51pm until May 14, 09:00pm

    NOW until 9:00pm Wed

    Extreme Heat Warning

  • Tonight

    Low: 71 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny and hot, with a high near 101. Heat index values as high as 106. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 73. Southeast wind around 10 mph.

    Low: 73 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and hot, with a high near 100. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and hot, with a high near 100. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny and hot, with a high near 99. South wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
Increasing clouds, with a low around 71. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny and hot, with a high near 101. Heat index values as high as 106. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 73. Southeast wind around 10 mph.
Friday
Partly sunny and hot, with a high near 100. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Partly sunny and hot, with a high near 100. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Partly sunny and hot, with a high near 99. South wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 74. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Partly sunny, with a high near 98.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW San Marcos Municipal Airport TX
 29.9°N 97.91°W (Elev. 640 ft)
Last Update:
4:44 pm CDT May 14, 2025
Forecast Valid:
4pm CDT May 14, 2025-6pm CDT May 21, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation