Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

74°F

23°C

Humidity 94%
Wind Speed S 12 mph
Barometer 29.61 in (1002.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 3 Apr 4:56 am CDT
Extended Forecast for

San Marcos Municipal Airport TX

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 70. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Some of the storms could be severe.  Patchy fog between 8am and 9am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am.  Low around 62. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%.

    Low: 62 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm.  Partly sunny, with a high near 76. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. North northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64. North wind around 15 mph, with gusts as high as 30 mph.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73. North northwest wind 5 to 10 mph.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 91. South wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 70. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A 50 percent chance of showers and thunderstorms. Some of the storms could be severe. Patchy fog between 8am and 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 62. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 76. North northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 43. North northwest wind around 15 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 64. North wind around 15 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 41. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 73. North northwest wind 5 to 10 mph.
Monday Night
Clear, with a low around 44.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 81.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos Municipal Airport TX
 29.9°N 97.89°W (Elev. 604 ft)
2:42 am CDT Apr 3, 2025
5am CDT Apr 3, 2025-6pm CDT Apr 9, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database