Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Flooding and Severe Weather Risk Continues This Weekend

More heavy rain will exacerbate flooding in the central and southern U.S. this weekend. In addition, over portions of the Mississippi, Ohio, and Tennessee Valleys, severe thunderstorms are expected. Some storms may produce large hail, damaging winds, and tornadoes. Meanwhile, snow and ice will again affect the Cascades, northern Rockies, upper Midwest, and New England through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

72°F

22°C

Humidity 84%
Wind Speed S 8 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 67°F (19°C)
Visibility 7.00 mi
Last update 24 Feb 11:56 am CST
Extended Forecast for

San Marcos TX

  • This
    Afternoon

    This Afternoon: A 40 percent chance of showers.  Mostly cloudy, with a high near 75. South wind 5 to 10 mph.

    Chance
    Showers

    High: 75 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. West southwest wind 5 to 10 mph becoming north after midnight.

    Mostly Cloudy

    Low: 50 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 64. North wind around 5 mph becoming east in the afternoon.

    Chance
    Showers

    High: 64 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 44. East wind around 5 mph becoming north northwest in the evening.

    Partly Cloudy

    Low: 44 °F

  • Monday

    Monday: Sunny, with a high near 72. North wind 5 to 10 mph becoming east in the afternoon.

    Sunny

    High: 72 °F

  • Monday
    Night

    Monday Night: Patchy drizzle with a slight chance of showers after midnight.  Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 51. East southeast wind 5 to 10 mph.

    Mostly Cloudy
    then Patchy
    Drizzle and
    Patchy Fog

    Low: 51 °F

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon.  Patchy fog before noon.  Otherwise, cloudy, with a high near 70. South southeast wind 5 to 10 mph.  Chance of precipitation is 40%.

    Chance
    Showers and
    Patchy Fog

    High: 70 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 61. South southeast wind around 10 mph.

    Slight Chance
    T-storms

    Low: 61 °F

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 74. Southwest wind 10 to 15 mph.

    Chance
    T-storms

    High: 74 °F

Detailed Forecast

This Afternoon
A 40 percent chance of showers. Mostly cloudy, with a high near 75. South wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 50. West southwest wind 5 to 10 mph becoming north after midnight.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 64. North wind around 5 mph becoming east in the afternoon.
Sunday Night
Partly cloudy, with a low around 44. East wind around 5 mph becoming north northwest in the evening.
Monday
Sunny, with a high near 72. North wind 5 to 10 mph becoming east in the afternoon.
Monday Night
Patchy drizzle with a slight chance of showers after midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 51. East southeast wind 5 to 10 mph.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Patchy fog before noon. Otherwise, cloudy, with a high near 70. South southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southeast wind around 10 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Southwest wind 10 to 15 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 68.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
11:06 am CST Feb 24, 2018
12pm CST Feb 24, 2018-6pm CST Mar 2, 2018
 
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