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.

37°F

3°C

Humidity 67%
Wind Speed N 7 mph
Barometer 30.38 in (1029.1 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 14 Jan 7:56 am CST
Extended Forecast for

San Marcos Municipal Airport TX

  • Today

    Today: Mostly cloudy, with a high near 58. East northeast wind around 5 mph.

    High: 58 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Cloudy, with a low around 45. East northeast wind around 5 mph.

    Low: 45 °F

    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before noon. Cloudy, with a high near 54. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 38. North wind around 5 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 61. North wind around 5 mph becoming east southeast in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 41. Southeast wind around 5 mph becoming south southwest after midnight.

    Low: 41 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 67. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. South southwest wind 5 to 10 mph becoming west after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 68. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 58. East northeast wind around 5 mph.
Tonight
A 20 percent chance of showers after midnight. Cloudy, with a low around 45. East northeast wind around 5 mph.
Wednesday
A 30 percent chance of showers, mainly before noon. Cloudy, with a high near 54. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 38. North wind around 5 mph.
Thursday
Mostly sunny, with a high near 61. North wind around 5 mph becoming east southeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 41. Southeast wind around 5 mph becoming south southwest after midnight.
Friday
Mostly cloudy, with a high near 67. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 49. South southwest wind 5 to 10 mph becoming west after midnight.
Saturday
Sunny, with a high near 68. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 22.
M.L.King Day
Mostly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos Municipal Airport TX
 29.88°N 97.86°W (Elev. 600 ft)
Last Update:
5:42 am CST Jan 14, 2025
Forecast Valid:
8am CST Jan 14, 2025-6pm CST Jan 20, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation