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.

Fair

69°F

21°C

Humidity 78%
Wind Speed SE 3 mph
Barometer 29.89 in (1011.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 17 Oct 1:56 am CDT
Extended Forecast for

2 Miles SW San Marcos Municipal Airport TX

  • Overnight

    Overnight: Mostly clear, with a low around 63. South wind around 5 mph becoming calm.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 70. Southeast wind 5 to 10 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 94. South southwest wind 5 to 10 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Saturday Night

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

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 63. South wind around 5 mph becoming calm.
Friday
Sunny, with a high near 92. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 70. Southeast wind 5 to 10 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 94. South southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 66. South southwest wind around 5 mph becoming north after midnight.
Sunday
Sunny, with a high near 87. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Clear, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 63. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW San Marcos Municipal Airport TX
 29.88°N 97.89°W (Elev. 597 ft)
Last Update:
1:44 am CDT Oct 17, 2025
Forecast Valid:
2am CDT Oct 17, 2025-6pm CDT Oct 23, 2025
 
Forecast Discussion
 
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Additional Resources

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