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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

64°F

18°C

Humidity 43%
Wind Speed S 7 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 1 Jan 7:56 pm CST
Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. Southwest wind around 5 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. West wind 5 to 10 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. Northwest wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42. North wind around 5 mph.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 72. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. South wind around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 59. South wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. Southwest wind around 5 mph.
Friday
Sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 55. West wind 5 to 10 mph.
Saturday
Sunny, with a high near 76. Northwest wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 42. North wind around 5 mph.
Sunday
Sunny, with a high near 72. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 50. South wind around 5 mph.
Monday
Mostly cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 59. South wind around 5 mph.
Tuesday
Partly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 78.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W San Marcos Municipal Airport TX
 29.9°N 97.91°W (Elev. 640 ft)
Last Update:
7:44 pm CST Jan 1, 2026
Forecast Valid:
8pm CST Jan 1, 2026-6pm CST Jan 8, 2026
 
Forecast Discussion
 
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