Unsettled Weather in the Southeast and West; Unseasonably Hot in the North-Central U.S.; Coastal Impacts Along the East Coast

Thunderstorms and heavy rainfall may produce isolated flash flooding along the southeast Atlantic coast the next several days. Showers and thunderstorms persist across portions of the Great Basin, Pacific Northwest, and northern Rockies. Unseasonably hot temperatures continue for much of the Plains and Midwest. High surf, dangerous rip currents, and coastal flooding continue along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

94°F

34°C

Humidity 27%
Wind Speed E 7 mph
Barometer 30.04 in (1016.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 2 Oct 3:56 pm CDT
Extended Forecast for

4 Miles WNW San Marcos TX

  • Tonight

    Tonight: Mostly clear, with a low around 67. East southeast wind around 5 mph becoming calm.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: A 10 percent chance of showers after 4pm.  Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.

    High: 92 °F

    Sunny then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. East wind around 5 mph becoming calm  in the evening.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming east around 5 mph in the morning.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Calm wind becoming east around 5 mph in the morning.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 67. East southeast wind around 5 mph becoming calm.
Friday
A 10 percent chance of showers after 4pm. Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. East wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming east around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 66. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 92. Calm wind becoming east around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 67. East southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 68. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
A 20 percent chance of showers. Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW San Marcos TX
 29.9°N 97.99°W (Elev. 850 ft)
3:32 pm CDT Oct 2, 2025
4pm CDT Oct 2, 2025-6pm CDT Oct 9, 2025
 
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