Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

32°F

0°C

Humidity 54%
Wind Speed W 3 mph
Barometer 30.28 in (1025.7 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 19 Jan 7:56 am CST
Extended Forecast for

Wimberley TX

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 66. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, with a high near 56. North northeast wind around 5 mph becoming east southeast in the afternoon.

    High: 56 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers.  Cloudy, with a low around 48. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly before noon.  Cloudy, with a high near 64. Calm wind becoming south southwest around 5 mph in the morning.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South southeast wind around 5 mph becoming calm.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 68. North wind around 5 mph becoming east in the afternoon.

    High: 68 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. East wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after noon.  Mostly cloudy, with a high near 69. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Cloudy then
    Slight Chance
    Showers

Detailed Forecast

M.L.King Day
Sunny, with a high near 66. Calm wind becoming south southeast around 5 mph in the afternoon.
Tonight
Increasing clouds, with a low around 39. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Cloudy, with a high near 56. North northeast wind around 5 mph becoming east southeast in the afternoon.
Tuesday Night
A 40 percent chance of showers. Cloudy, with a low around 48. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers, mainly before noon. Cloudy, with a high near 64. Calm wind becoming south southwest around 5 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 48. South southeast wind around 5 mph becoming calm.
Thursday
Partly sunny, with a high near 68. North wind around 5 mph becoming east in the afternoon.
Thursday Night
Mostly cloudy, with a low around 48. East wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 69. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 36.
Saturday
A 40 percent chance of showers. Cloudy, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Wimberley TX
 29.99°N 98.1°W (Elev. 817 ft)
5:42 am CST Jan 19, 2026
8am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database