High Flood Risk For Saturated Tennessee Valley and South; Near-Blizzard Conditions Possible for the Plains and Upper Midwest This Weekend

A high risk for flash flooding near a stalled front will continue across the saturated Tennessee Valley and South today. Meanwhile, a storm system producing heavy mountain and rare low elevation snows will shift from the Southwest across the Plains this weekend, with near blizzard conditions. To the south, an outbreak of severe thunderstorms is expected for the Mississippi Valley on Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

58°F

14°C

Humidity 90%
Wind Speed NE 7 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 22 Feb 1:56 pm CST
Extended Forecast for

3 Miles WNW San Marcos TX

  • This
    Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 65. East southeast wind around 5 mph.

    Chance
    Showers

    High: 65 °F

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after midnight.  Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 55. East southeast wind around 5 mph becoming southwest after midnight.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers and
    Patchy Fog

    Low: 55 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 9am.  Mostly cloudy, then gradually becoming sunny, with a high near 70. West wind 10 to 20 mph, with gusts as high as 25 mph.

    Slight Chance
    T-storms then
    Sunny

    High: 70 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 41. West wind around 10 mph becoming north after midnight.

    Mostly Clear

    Low: 41 °F

  • Sunday

    Sunday: Sunny, with a high near 65. North wind 5 to 10 mph becoming east northeast in the afternoon.

    Sunny

    High: 65 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 41. Northeast wind around 5 mph.

    Mostly Clear

    Low: 41 °F

  • Monday

    Monday: Mostly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    Mostly Sunny

    High: 66 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 52. Southeast wind around 5 mph.

    Mostly Cloudy

    Low: 52 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers.  Mostly cloudy, with a high near 67. East southeast wind around 5 mph.

    Slight Chance
    Showers

    High: 67 °F

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. East southeast wind around 5 mph.
Tonight
A chance of showers, with thunderstorms also possible after midnight. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55. East southeast wind around 5 mph becoming southwest after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 70. West wind 10 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 41. West wind around 10 mph becoming north after midnight.
Sunday
Sunny, with a high near 65. North wind 5 to 10 mph becoming east northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 41. Northeast wind around 5 mph.
Monday
Mostly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 52. Southeast wind around 5 mph.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 67. East southeast wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 65.
Click Map For Forecast
Point Forecast:
3 Miles WNW San Marcos TX
 29.9°N 97.97°W (Elev. 686 ft)
2:21 pm CST Feb 22, 2019
2pm CST Feb 22, 2019-6pm CST Feb 28, 2019
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database