Coastal Threats for the East and Gulf; Record Warmth for the Central U.S.

Persistent onshore flow across the Southeast and portions of the mid-Atlantic will keep the risk of rip currents through the weekend. Rainfall could be locally heavy across Florida, especially along the eastern shoreline. Meanwhile, record warmth for portions of the Plains and Midwest with elevated fire concerns. For the west, a trough will keep the pattern unsettled with wet conditions. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

94°F

34°C

Humidity 30%
Wind Speed NE 12 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 3 Oct 4:56 pm CDT
Extended Forecast for

San Marcos TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers.  Sunny, with a high near 93. East wind around 5 mph.

    High: 93 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm.  Mostly clear, with a low around 67. East wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 67 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. North wind 5 to 10 mph becoming east in the afternoon.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. East southeast wind 5 to 10 mph becoming light  after midnight.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. East wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. East southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after 1pm.  Mostly sunny, with a high near 91. East wind 5 to 10 mph.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. East wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm.  Mostly sunny, with a high near 90. East wind 5 to 10 mph.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Sunny, with a high near 93. East wind around 5 mph.
Tonight
A 10 percent chance of showers before 7pm. Mostly clear, with a low around 67. East wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 92. North wind 5 to 10 mph becoming east in the afternoon.
Saturday Night
Mostly clear, with a low around 67. East southeast wind 5 to 10 mph becoming light after midnight.
Sunday
Sunny, with a high near 92. East wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 70. East southeast wind around 5 mph.
Monday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 91. East wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 70. East wind around 5 mph.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 90. East wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
5:32 pm CDT Oct 3, 2025
5pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database