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

83°F

28°C

Humidity 13%
Wind Speed Vrbl 3 mph
Barometer 30.12 in (1019.4 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 6 Feb 2:56 pm CST
Extended Forecast for

5 Miles WSW Martindale TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. North northeast wind around 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 47. Calm wind becoming west northwest around 5 mph.

    Low: 47 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81. North wind around 5 mph becoming southeast in the afternoon.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm after midnight.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 76. Light south wind increasing to 5 to 10 mph in the morning.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 55. South wind around 5 mph.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 58. South southeast wind 5 to 10 mph.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 82. North northeast wind around 5 mph.
Tonight
Clear, with a low around 47. Calm wind becoming west northwest around 5 mph.
Saturday
Sunny, with a high near 81. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. Southeast wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 76. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 55. South wind around 5 mph.
Monday
Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58. South southeast wind 5 to 10 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Partly sunny, with a high near 80.
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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:
2:33 pm CST Feb 6, 2026
Forecast Valid:
3pm CST Feb 6, 2026-6pm CST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation