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

63°F

17°C

Humidity 90%
Wind Speed NW 6 mph
Barometer 30.08 in (1018.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 May 1:56 am CDT
Extended Forecast for

Martindale TX

  • Overnight

    Overnight: Clear, with a low around 63. Calm wind.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Calm wind becoming southeast around 5 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. Southeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Light south southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 71. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 71 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 91. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 76. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 90. Calm wind becoming southeast around 5 mph.
Wednesday Night
Mostly clear, with a low around 64. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 91. Light south southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 71. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 91. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 76. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 91.
Sunday Night
Mostly cloudy, with a low around 79.
Monday
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 89.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Martindale TX
 29.84°N 97.83°W (Elev. 502 ft)
Last Update:
1:28 am CDT May 13, 2026
Forecast Valid:
2am CDT May 13, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation