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.

Fog/Mist

78°F

26°C

Humidity 85%
Wind Speed SE 14 mph
Barometer 29.92 in (1012.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 4 May 11:56 am CDT
Extended Forecast for

San Marcos TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. East southeast wind around 10 mph.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Mostly cloudy, with a high near 81. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 81 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, with a high near 86. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 71. South southeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Cloudy

  • Tuesday

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

    High: 90 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 72. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 72 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 93. South wind around 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 84. East southeast wind around 10 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Mostly cloudy, with a high near 81. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 86. South wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 71. South southeast wind around 15 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, 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 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 93. South wind around 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
Mostly sunny, with a high near 94.
Thursday Night
Partly cloudy, with a low around 68.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
10:42 am CDT May 4, 2024
Forecast Valid:
12pm CDT May 4, 2024-6pm CDT May 10, 2024
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation