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

62°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.20 in (1022.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 9 Nov 5:56 pm CST
Extended Forecast for

4 Miles WNW Niederwald TX

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 71. Calm wind.

    High: 71 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Light west northwest wind becoming north northwest 5 to 10 mph after midnight.

    Low: 56 °F

    Mostly Clear

  • Thursday

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

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 49. Calm wind.

    Low: 49 °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 49. Calm wind.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers before 9pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 71. Calm wind.
Tuesday Night
Partly cloudy, with a low around 57. Calm wind.
Veterans Day
Partly sunny, with a high near 77. Calm wind.
Wednesday Night
Mostly clear, with a low around 56. Light west northwest wind becoming north northwest 5 to 10 mph after midnight.
Thursday
Sunny, with a high near 75. North wind 5 to 10 mph becoming light in the afternoon.
Thursday Night
Clear, with a low around 49. Calm wind.
Friday
Sunny, with a high near 76. Calm wind.
Friday Night
Mostly clear, with a low around 49. Calm wind.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 74.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 54.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 71.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Niederwald TX
 30.02°N 97.79°W (Elev. 646 ft)
Last Update:
5:42 pm CST Nov 9, 2026
Forecast Valid:
6pm CST Nov 9, 2026-6pm CST Nov 16, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation