Frigid Temperatures for Parts of Central and Western U.S.; Heavy Rain and Flooding for Gulf Coast and Hawaii

An arctic cold front will continue to plunge southward through the Plains, Mississippi Valley and the Northwest quadrant of the U.S. through tonight. Well below normal temperatures are expected along with dangerous wind chills. A wintry mix will develop over the Ohio and Tennessee Valleys. Meanwhile, heavy rain, flooding and thunderstorms are forecast over much of the Gulf Coast and Hawaii. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 66°F (19°C)
Visibility 2.50 mi
Last update 29 Jan 9:56 am CST
Extended Forecast for

San Marcos TX

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 3pm.  Areas of fog before noon.  Otherwise, mostly cloudy, with a high near 69. West wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    Chance
    T-storms and
    Areas Fog

    High: 69 °F

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Mostly Cloudy

    Low: 41 °F

  • Monday

    Monday: A 40 percent chance of showers, mainly after noon.  Cloudy, with a high near 42. North wind around 15 mph, with gusts as high as 25 mph.

    Chance
    Showers

    High: 42 °F

  • Monday
    Night

    Monday Night: Showers likely.  Cloudy, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    Low: 35 °F

  • Tuesday

    Tuesday: A 50 percent chance of showers.  Cloudy, with a high near 43. North wind around 15 mph, with gusts as high as 25 mph.

    Chance
    Showers

    High: 43 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely.  Cloudy, with a low around 36. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    Showers
    Likely

    Low: 36 °F

  • Wednesday

    Wednesday: Showers.  High near 46. North wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%.

    Showers

    High: 46 °F

  • Wednesday
    Night

    Wednesday Night: Showers, with thunderstorms also possible after midnight.  Low around 41. North northeast wind around 10 mph.  Chance of precipitation is 90%.

    Showers

    Low: 41 °F

  • Thursday

    Thursday: A 50 percent chance of showers, mainly before noon.  Mostly cloudy, with a high near 55. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Chance
    Showers then
    Slight Chance
    Showers

    High: 55 °F

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 3pm. Areas of fog before noon. Otherwise, mostly cloudy, with a high near 69. West wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly cloudy, with a low around 41. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 42. North wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Showers likely. Cloudy, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Tuesday
A 50 percent chance of showers. Cloudy, with a high near 43. North wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely. Cloudy, with a low around 36. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Wednesday
Showers. High near 46. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday Night
Showers, with thunderstorms also possible after midnight. Low around 41. North northeast wind around 10 mph. Chance of precipitation is 90%.
Thursday
A 50 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 55. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 61.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
5:20 am CST Jan 29, 2023
10am CST Jan 29, 2023-6pm CST Feb 4, 2023
 
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