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A Major Severe Weather Outbreak is Forecast Today and/or Tonight

A severe thunderstorm and tornado outbreak is expected today across north Florida and south Georgia, with the significant severe threat also expected to extend southward into central Florida and northeastward into South Carolina this evening. A few long-track, strong tornadoes will be possible. In the west, more heavy rain and mountain snow will occur into the early part of this week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

48°F

9°C

Humidity 62%
Wind Speed NW 8 mph
Barometer 29.96 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 22 Jan 8:55 pm CST
Extended Forecast for

San Marcos TX

  • Tonight

    Tonight: Clear, with a low around 44. Northwest wind 5 to 10 mph.

    Clear

    Low: 44 °F

  • Monday

    Monday: Sunny, with a high near 75. Northwest wind 5 to 10 mph becoming south in the afternoon.

    Sunny

    High: 75 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 50. South wind 5 to 10 mph.

    Mostly Clear

    Low: 50 °F

  • Tuesday

    Tuesday: Sunny, with a high near 79. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    Sunny

    High: 79 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 49. South southeast wind 5 to 10 mph becoming north northwest after midnight.

    Partly Cloudy

    Low: 49 °F

  • Wednesday

    Wednesday: Sunny, with a high near 67. North northwest wind 10 to 15 mph.

    Sunny

    High: 67 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 38. North wind 5 to 10 mph.

    Mostly Clear

    Low: 38 °F

  • Thursday

    Thursday: Sunny, with a high near 61. North wind around 5 mph becoming east in the afternoon.

    Sunny

    High: 61 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 37. East southeast wind around 5 mph.

    Mostly Clear

    Low: 37 °F

Detailed Forecast

Tonight
Clear, with a low around 44. Northwest wind 5 to 10 mph.
Monday
Sunny, with a high near 75. Northwest wind 5 to 10 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 50. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 79. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 49. South southeast wind 5 to 10 mph becoming north northwest after midnight.
Wednesday
Sunny, with a high near 67. North northwest wind 10 to 15 mph.
Wednesday Night
Mostly clear, with a low around 38. North wind 5 to 10 mph.
Thursday
Sunny, with a high near 61. North wind around 5 mph becoming east in the afternoon.
Thursday Night
Mostly clear, with a low around 37. East southeast wind around 5 mph.
Friday
Mostly sunny, with a high near 63.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 41.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 60.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 63.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
8:34 pm CST Jan 22, 2017
9pm CST Jan 22, 2017-6pm CST Jan 29, 2017
 
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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