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

73°F

23°C

Humidity 94%
Wind Speed S 15 mph
Barometer 29.60 in (1001.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 2 Apr 12:56 am CDT
Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 69. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, with a high near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 88 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 89. South southeast wind around 5 mph.

    High: 89 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. South wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy, with a high near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 70. Southeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy, with a high near 89. South southeast wind around 5 mph.
Thursday Night
A slight chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 71. East southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 44. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 75.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W San Marcos Municipal Airport TX
 29.9°N 97.91°W (Elev. 640 ft)
Last Update:
12:42 am CDT Apr 2, 2025
Forecast Valid:
1am CDT Apr 2, 2025-6pm CDT Apr 8, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation