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

58°F

14°C

Humidity 90%
Wind Speed NE 17 G 26 mph
Barometer 29.95 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 1 May 6:56 pm CDT
Extended Forecast for

2 Miles E San Marcos TX

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 50. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 50 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 73. North wind around 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 51. East northeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57. South southeast wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 90. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 72 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 50. North northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 73. North wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 51. East northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 57. South southeast wind around 5 mph.
Monday
Partly sunny, with a high near 83. South wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 90. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 88.
Wednesday Night
Mostly cloudy, with a low around 64.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E San Marcos TX
 29.88°N 97.91°W (Elev. 597 ft)
Last Update:
6:44 pm CDT May 1, 2026
Forecast Valid:
7pm CDT May 1, 2026-6pm CDT May 8, 2026
 
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Additional Resources

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