Winter Storm System To Bring Widespread Impacts Across the Eastern Half of the U.S. Through Midweek

A developing winter storm system will bring a swath of heavy snow and ice from Oklahoma into the Midwest, Ohio Valley, Mid Atlantic, and the Northeast U.S. Tuesday through Wednesday. Areas of dangerous travel are likely. Further South, several inches of heavy rain will lead to the potential for flooding in the lower Mississippi and Tennessee River Valleys. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

44°F

7°C

Humidity 71%
Wind Speed NE 13 mph
Barometer 30.05 in (1017.4 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 19 Feb 6:56 am CST
Extended Forecast for

San Marcos TX

  • Today

    Today: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon.  Cloudy, with a high near 47. North northeast wind around 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    High: 47 °F

  • Tonight

    Tonight: A 20 percent chance of rain before midnight.  Mostly cloudy, with a low around 39. North wind 5 to 10 mph.

    Slight Chance
    Rain then
    Mostly Cloudy

    Low: 39 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. North northwest wind around 5 mph.

    Mostly Sunny

    High: 66 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 42. East northeast wind around 5 mph becoming calm  after midnight.

    Partly Cloudy

    Low: 42 °F

  • Thursday

    Thursday: A 20 percent chance of rain.  Mostly cloudy, with a high near 61. East wind 5 to 10 mph.

    Slight Chance
    Rain

    High: 61 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers.  Cloudy, with a low around 49. East northeast wind 5 to 10 mph.

    Chance
    Showers

    Low: 49 °F

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms.  Cloudy, with a high near 69. Northeast wind around 5 mph becoming southeast in the morning.

    Chance
    Showers

    High: 69 °F

  • Friday
    Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 59. South southeast wind 5 to 10 mph.

    Chance
    Showers

    Low: 59 °F

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 75. South wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.

    Chance
    Showers

    High: 75 °F

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 47. North northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 39. North wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 66. North northwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 42. East northeast wind around 5 mph becoming calm after midnight.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 61. East wind 5 to 10 mph.
Thursday Night
A 30 percent chance of showers. Cloudy, with a low around 49. East northeast wind 5 to 10 mph.
Friday
A 30 percent chance of showers and thunderstorms. Cloudy, with a high near 69. Northeast wind around 5 mph becoming southeast in the morning.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South southeast wind 5 to 10 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 75. South wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 45.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 66.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
5:39 am CST Feb 19, 2019
7am CST Feb 19, 2019-6pm CST Feb 25, 2019
 
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Additional Resources

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