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

75°F

24°C

Humidity 37%
Wind Speed E 8 mph
Barometer 30.13 in (1019.6 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 12 Nov 11:56 am CST
Extended Forecast for

Martindale TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. North northeast wind around 5 mph becoming calm.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 49. Calm wind becoming west northwest around 5 mph.

    Low: 49 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 77. North northwest wind around 5 mph becoming calm.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. South wind around 5 mph becoming calm.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: A 50 percent chance of showers after noon. Mostly sunny, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 25 mph.

    High: 70 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 54. East southeast wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 69 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. North northeast wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 61. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 76. North northeast wind around 5 mph becoming calm.
Tonight
Clear, with a low around 49. Calm wind becoming west northwest around 5 mph.
Friday
Sunny, with a high near 77. North northwest wind around 5 mph becoming calm.
Friday Night
Mostly clear, with a low around 49. South wind around 5 mph becoming calm.
Saturday
A 50 percent chance of showers after noon. Mostly sunny, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54. East southeast wind 5 to 10 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. North northeast wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Monday
Partly sunny, with a high near 61. North northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martindale TX
 29.86°N 97.86°W (Elev. 554 ft)
Last Update:
11:44 am CST Nov 12, 2026
Forecast Valid:
12pm CST Nov 12, 2026-6pm CST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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