Significant Storm Bringing Widespread Winter Weather and Heavy Rainfall Across the Eastern Half of the Country

A storm system moving into the Eastern parts of the country is bringing heavy snow across the Great Lakes and into the Mid-Atlantic and Northeast today. There is also the potential for significant ice accumulations across the northern Mid-Atlantic. To the south, heavy rainfall is producing flash flooding, and river flooding, from the Ohio and Mississippi Valleys to the Deep South. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

65°F

18°C

Humidity 29%
Wind Speed NW 8 mph
Barometer 29.96 in (1014.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 20 Feb 1:56 pm CST
Extended Forecast for

San Marcos TX

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 66. North northwest wind around 5 mph.

    Sunny

    High: 66 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 42. East wind around 5 mph.

    Partly Cloudy

    Low: 42 °F

  • Thursday

    Thursday: A 20 percent chance of showers.  Cloudy, with a high near 59. North northeast wind 5 to 10 mph becoming east in the afternoon.

    Slight Chance
    Showers

    High: 59 °F

  • Thursday
    Night

    Thursday Night: A chance of showers before 9pm, then patchy drizzle with a chance of showers after 9pm.  Patchy fog after 9pm.  Otherwise, cloudy, with a low around 52. Northeast wind around 5 mph.  Chance of precipitation is 40%.

    Chance
    Showers and
    Patchy Fog

    Low: 52 °F

  • Friday

    Friday: A 50 percent chance of showers.  Cloudy, with a high near 68. East northeast wind around 5 mph becoming south southeast in the afternoon.

    Chance
    Showers

    High: 68 °F

  • Friday
    Night

    Friday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 58. Southeast wind 5 to 10 mph.

    Chance
    Showers

    Low: 58 °F

  • Saturday

    Saturday: A 20 percent chance of showers before noon.  Mostly sunny, with a high near 72. South southwest wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    Slight Chance
    Showers then
    Mostly Sunny

    High: 72 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 42. West northwest wind 5 to 15 mph.

    Mostly Clear

    Low: 42 °F

  • Sunday

    Sunday: Sunny, with a high near 69. North wind around 5 mph becoming east in the afternoon.

    Sunny

    High: 69 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 66. North northwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 42. East wind around 5 mph.
Thursday
A 20 percent chance of showers. Cloudy, with a high near 59. North northeast wind 5 to 10 mph becoming east in the afternoon.
Thursday Night
A chance of showers before 9pm, then patchy drizzle with a chance of showers after 9pm. Patchy fog after 9pm. Otherwise, cloudy, with a low around 52. Northeast wind around 5 mph. Chance of precipitation is 40%.
Friday
A 50 percent chance of showers. Cloudy, with a high near 68. East northeast wind around 5 mph becoming south southeast in the afternoon.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58. Southeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 72. South southwest wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 42. West northwest wind 5 to 15 mph.
Sunday
Sunny, with a high near 69. North wind around 5 mph becoming east in the afternoon.
Sunday Night
Mostly clear, with a low around 44.
Monday
A 30 percent chance of showers. Mostly cloudy, with a high near 65.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 67.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.9°N 97.91°W (Elev. 640 ft)
5:35 am CST Feb 20, 2019
2pm CST Feb 20, 2019-6pm CST Feb 26, 2019
 
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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