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

65°F

18°C

Humidity 66%
Wind Speed N 7 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 3 Feb 6:56 pm CST
Extended Forecast for

5 Miles WSW Martindale TX

  • Tonight

    Tonight: Partly cloudy, with a low around 45. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 66. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 38. North wind 5 to 10 mph.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 67. North northwest wind around 5 mph becoming southwest in the afternoon.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42. Southwest wind around 5 mph.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 76. West wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 45. South southwest wind around 5 mph becoming calm.

    Low: 45 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 78. West wind around 5 mph becoming south in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. South wind around 5 mph.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 66. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 38. North wind 5 to 10 mph.
Thursday
Sunny, with a high near 67. North northwest wind around 5 mph becoming southwest in the afternoon.
Thursday Night
Clear, with a low around 42. Southwest wind around 5 mph.
Friday
Sunny, with a high near 76. West wind 5 to 10 mph.
Friday Night
Clear, with a low around 45. South southwest wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 78. West wind around 5 mph becoming south in the afternoon.
Saturday Night
Mostly clear, with a low around 50. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 77.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Martindale TX
 29.81°N 97.91°W (Elev. 581 ft)
Last Update:
5:46 pm CST Feb 3, 2026
Forecast Valid:
7pm CST Feb 3, 2026-6pm CST Feb 10, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation