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

Showers and Cooler Temperatures in the East; Multi-Day Rain Event in the Southwest

A cold front in the East will bring showers and thunderstorms and much cooler temperatures from the Northeast into the Southeast. The Southwest, centered around New Mexico, will continue to see showers and thunderstorms, where there maybe isolated flash flooding. Tropical moisture will bring a multi-day period of thunderstorms and locally heavy rainfall across the Southwest beginning Thursday. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

83°F

28°C

Humidity 61%
Wind Speed NE 14 mph
Barometer 30.16 in (1020.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 8 Oct 9:56 am CDT
Extended Forecast for

5 Miles SW San Marcos TX

  • Today

    Today: Mostly sunny, with a high near 92. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Northeast wind 5 to 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 92. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. East northeast wind 5 to 10 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 90. Calm wind becoming southeast around 5 mph.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 63. South wind around 5 mph.

    Low: 63 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 92. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 69. Northeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 92. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 65. East northeast wind 5 to 10 mph.
Friday
Sunny, with a high near 91. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 90. Calm wind becoming southeast around 5 mph.
Saturday Night
Clear, with a low around 63. South wind around 5 mph.
Sunday
Sunny, with a high near 90. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 66.
Columbus Day
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW San Marcos TX
 29.81°N 97.99°W (Elev. 653 ft)
Last Update:
7:44 am CDT Oct 8, 2025
Forecast Valid:
10am CDT Oct 8, 2025-6pm CDT Oct 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation