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

70°F

21°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 30.03 in (1016.1 mb)
Dewpoint 70°F (21°C)
Visibility 6.00 mi
Last update 26 Apr 2:56 am CDT
Extended Forecast for

5 Miles SW San Marcos TX

  • Overnight

    Overnight: Cloudy, with a low around 67. South southeast wind around 5 mph.

    Low: 67 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 85. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 87. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Cloudy then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Cloudy, with a low around 67. South southeast wind around 5 mph.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 85. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Increasing clouds, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 87. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly cloudy, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW San Marcos TX
 29.83°N 97.99°W (Elev. 676 ft)
Last Update:
3:44 am CDT Apr 26, 2025
Forecast Valid:
3am CDT Apr 26, 2025-6pm CDT May 2, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation