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.

Overcast

65°F

18°C

Humidity 90%
Wind Speed NW 3 mph
Barometer 30.16 in (1021.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 11 Nov 8:56 am CST
Extended Forecast for

5 Miles WSW Martindale TX

  • Veterans Day

    Veterans Day: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 76. Calm wind.

    High: 76 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 57. Light north wind increasing to 5 to 10 mph after midnight.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. North wind 5 to 10 mph becoming light north northeast in the afternoon.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 50. Calm wind becoming west northwest around 5 mph.

    Low: 50 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 76. Calm wind.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Partly sunny, with a high near 71. Light east wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 56. East southeast wind around 10 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely after noon. Mostly cloudy, with a high near 70. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 70 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Veterans Day
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 76. Calm wind.
Tonight
Partly cloudy, with a low around 57. Light north wind increasing to 5 to 10 mph after midnight.
Thursday
Sunny, with a high near 75. North wind 5 to 10 mph becoming light north northeast in the afternoon.
Thursday Night
Clear, with a low around 50. Calm wind becoming west northwest around 5 mph.
Friday
Sunny, with a high near 76. Calm wind.
Friday Night
Mostly clear, with a low around 52. Calm wind.
Saturday
A 30 percent chance of showers after noon. Partly sunny, with a high near 71. Light east wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 56. East southeast wind around 10 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms, then showers likely after noon. Mostly cloudy, with a high near 70. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Partly sunny, with a high near 64.
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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:
8:24 am CST Nov 11, 2026
Forecast Valid:
9am CST Nov 11, 2026-6pm CST Nov 17, 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