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.

Fair

89°F

32°C

Humidity 27%
Wind Speed NE 9 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 6 Oct 5:56 pm CDT
Extended Forecast for

3 Miles WSW Staples TX

  • Tonight

    Tonight: Clear, with a low around 65. Northeast wind around 5 mph becoming calm.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. North northeast wind 5 to 10 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66. North northeast wind around 5 mph becoming calm.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. North wind around 5 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. East northeast wind 5 to 10 mph.

    High: 87 °F

    Sunny

  • Friday Night

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

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. North northeast wind around 5 mph.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. East northeast wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 65. Northeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 89. North northeast wind 5 to 10 mph.
Wednesday Night
Clear, with a low around 66. North northeast wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 88. North wind around 5 mph.
Thursday Night
Mostly clear, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 87. East northeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 66. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 87. North northeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 66. East northeast wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 70.
Columbus Day
A 30 percent chance of showers. Partly sunny, with a high near 89.
Monday Night
Mostly cloudy, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Staples TX
 29.77°N 97.88°W (Elev. 525 ft)
Last Update:
5:32 pm CDT Oct 6, 2026
Forecast Valid:
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation