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

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair with Haze

97°F

36°C

Humidity 42%
Wind Speed SE 13 mph
Barometer 29.92 in (1012.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 27 Jul 3:56 pm CDT
Extended Forecast for

3 Miles SSE Buda TX

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 97. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Tuesday Night

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

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 97 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 97. Heat index values as high as 105. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 105. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 76. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 80.
Sunday
Mostly sunny, with a high near 98.
Sunday Night
Mostly clear, with a low around 78.
Monday
Mostly sunny, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Buda TX
 30.04°N 97.81°W (Elev. 650 ft)
Last Update:
2:46 pm CDT Jul 27, 2026
Forecast Valid:
4pm CDT Jul 27, 2026-6pm CDT Aug 3, 2026
 
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