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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

47°F

8°C

Humidity 86%
Wind Speed S 5 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 5 Dec 11:56 pm CST
Extended Forecast for

4 Miles NNW San Marcos Municipal Airport TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. Southwest wind around 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 74. Southwest wind 5 to 10 mph.

    High: 74 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. South southwest wind around 5 mph.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. West wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 61. North wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 35. East wind around 5 mph becoming calm.

    Low: 35 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Light south southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. South southwest wind 5 to 10 mph.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Southwest wind around 5 mph.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 74. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 51. South southwest wind around 5 mph.
Sunday
Sunny, with a high near 71. West wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Clear, with a low around 38. North wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 61. North wind 5 to 10 mph becoming east northeast in the afternoon.
Monday Night
Clear, with a low around 35. East wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 67. Light south southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 47. South southwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 69.
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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:
11:50 pm CST Dec 5, 2025
Forecast Valid:
12am CST Dec 6, 2025-6pm CST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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