National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

26°C

78°F

Humidity 87%
Wind Speed N 6 km/h
Barometer 1013.9 mb (29.96 in)
Dewpoint 23°C (74°F)
Visibility 16 km
Heat Index27°C (80°F)
Last update 31 May 9:56 pm CDT
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. East wind 5 to 10 km/h.

    Low: 23 °C

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Partly sunny, with a high near 33. Heat index values as high as 38. East southeast wind 5 to 15 km/h.

    High: 33 °C

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 24. Southeast wind 10 to 15 km/h.

    Low: 24 °C

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 34. Heat index values as high as 38. South southeast wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h.

    High: 34 °C

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 25. South southeast wind 15 to 20 km/h, with gusts as high as 35 km/h.

    Low: 25 °C

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35. South wind 15 to 25 km/h, with gusts as high as 40 km/h.

    High: 35 °C

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24. South southeast wind 15 to 25 km/h, with gusts as high as 35 km/h.

    Low: 24 °C

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 37. South wind 15 to 20 km/h, with gusts as high as 35 km/h.

    High: 37 °C

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. South southeast wind 15 to 20 km/h, with gusts as high as 35 km/h.

    Low: 24 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. East wind 5 to 10 km/h.
Saturday
A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Partly sunny, with a high near 33. Heat index values as high as 38. East southeast wind 5 to 15 km/h.
Saturday Night
Increasing clouds, with a low around 24. Southeast wind 10 to 15 km/h.
Sunday
Partly sunny, with a high near 34. Heat index values as high as 38. South southeast wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h.
Sunday Night
Mostly cloudy, with a low around 25. South southeast wind 15 to 20 km/h, with gusts as high as 35 km/h.
Monday
Mostly sunny, with a high near 35. South wind 15 to 25 km/h, with gusts as high as 40 km/h.
Monday Night
Mostly cloudy, with a low around 24. South southeast wind 15 to 25 km/h, with gusts as high as 35 km/h.
Tuesday
Mostly sunny and hot, with a high near 37. South wind 15 to 20 km/h, with gusts as high as 35 km/h.
Tuesday Night
Partly cloudy, with a low around 24. South southeast wind 15 to 20 km/h, with gusts as high as 35 km/h.
Wednesday
Mostly sunny and hot, with a high near 37.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
Mostly sunny, with a high near 36.
Thursday Night
Mostly clear, with a low around 23.
Friday
Mostly sunny, with a high near 35.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 m)
Last Update:
9:22 pm CDT May 31, 2024
Forecast Valid:
10pm CDT May 31, 2024-6pm CDT Jun 7, 2024
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation