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

43°F

6°C

Humidity 47%
Wind Speed NW 6 mph
Barometer 30.60 in (1036.4 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 22 Feb 10:56 pm CST
Extended Forecast for

5 Miles WSW Martindale TX

  • Tonight

    Tonight: Mostly clear, with a low around 35. North wind around 5 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. East wind around 5 mph becoming southwest after midnight.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. South southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind around 10 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. South southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 35. North wind around 5 mph.
Monday
Sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.
Monday Night
Mostly clear, with a low around 37. East wind around 5 mph becoming southwest after midnight.
Tuesday
Sunny, with a high near 75. South southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 54. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind around 10 mph.
Thursday
Sunny, with a high near 84. South southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Martindale TX
 29.81°N 97.91°W (Elev. 581 ft)
Last Update:
11:16 pm CST Feb 22, 2026
Forecast Valid:
11pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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