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

Tracking Storm System Across the Central U.S.

A storm system will slowly continue to press across the central U.S. Friday and Saturday with widespread showers and thunderstorms. Slight risks for severe thunderstorms and excessive rainfall have been issued Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

75°F

24°C

Humidity 69%
Wind Speed SE 7 mph
Barometer 29.89 in (1011.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 16 Oct 10:56 pm CDT
Extended Forecast for

4 Miles NNW San Marcos Municipal Airport TX

  • Tonight

    Tonight: Mostly clear, with a low around 62. South southeast wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 91. Light south southeast wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. Southeast wind 5 to 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. South wind around 5 mph becoming west northwest after midnight.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. North northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Northeast wind around 5 mph becoming south southeast after midnight.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. South wind around 10 mph.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 62. South southeast wind around 5 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 91. Light south southeast wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 69. Southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 66. South wind around 5 mph becoming west northwest after midnight.
Sunday
Sunny, with a high near 89. North northeast wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 58. Northeast wind around 5 mph becoming south southeast after midnight.
Monday
Sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 66. South wind around 10 mph.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
Last Update:
6:50 pm CDT Oct 16, 2025
Forecast Valid:
11pm CDT Oct 16, 2025-6pm CDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

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