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.

Fog/Mist

73°F

23°C

Humidity 81%
Wind Speed Calm
Barometer 29.79 in (1008.1 mb)
Dewpoint 67°F (19°C)
Visibility 5.00 mi
Last update 19 Feb 10:56 am CST
Extended Forecast for

4 Miles WNW Niederwald TX

  • Today

    Today: Mostly sunny, with a high near 86. North wind around 5 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, increasing clouds, with a low around 57. North northeast wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 76. Northeast wind around 5 mph.

    High: 76 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77. North wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 65. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. North northeast wind 5 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. North northeast wind around 5 mph becoming east in the afternoon.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 86. North wind around 5 mph.
Tonight
Patchy fog after 3am. Otherwise, increasing clouds, with a low around 57. North northeast wind around 5 mph becoming calm.
Friday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 76. Northeast wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 59. East northeast wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 77. North wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 42. North wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 65. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 38. North northeast wind 5 to 10 mph.
Monday
Sunny, with a high near 66. North northeast wind around 5 mph becoming east in the afternoon.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Niederwald TX
 30.02°N 97.79°W (Elev. 646 ft)
Last Update:
11:30 am CST Feb 19, 2026
Forecast Valid:
11am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
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