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

77°F

25°C

Humidity 52%
Wind Speed E 5 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 9 Sep 8:56 pm CDT
Extended Forecast for

3 Miles NNW San Marcos Municipal Airport TX

  • Tonight

    Tonight: Clear, with a low around 64. East wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Clear

  • Wednesday

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

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 68. East wind around 5 mph becoming calm after midnight.

    Low: 68 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Light and variable wind becoming east southeast 5 to 10 mph in the morning.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. East southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. Light and variable wind becoming east southeast 5 to 10 mph in the morning.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69. Southeast wind 5 to 10 mph.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 64. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 95. Calm wind becoming east southeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 68. East wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 96. Light and variable wind becoming east southeast 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 69. East southeast wind 5 to 10 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 97. Light and variable wind becoming east southeast 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 68. Southeast wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 96. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 69. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
Last Update:
7:44 pm CDT Sep 9, 2025
Forecast Valid:
9pm CDT Sep 9, 2025-6pm CDT Sep 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation