Wintry Conditions Over The Rockies, Heavy Rainfall And Flash Flooding Threat Over The Desert Southwest

Remnant moisture from what was once Tropical Storm Raymond will continue to produce heavy rainfall and the threat for flash flooding over the Desert Southwest into Thursday. Heavy snow will also be possible over parts of the Rockies, and will likely cause hazardous travel. Meanwhile, critical fire weather conditions continue across northern California into Thursday morning. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy and Breezy

84°F

29°C

Humidity 48%
Wind Speed S 24 G 33 mph
Barometer 29.89 in (1011.2 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 20 Nov 1:56 pm CST
Extended Forecast for

San Marcos TX

  • This
    Afternoon

    This Afternoon: Partly sunny, with a high near 81. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.

    Partly Sunny

    High: 81 °F

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 64. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Mostly Cloudy
    then Slight
    Chance
    T-storms

    Low: 64 °F

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before noon.  Cloudy, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Chance
    Showers then
    Slight Chance
    T-storms

    High: 78 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight.  Mostly cloudy, with a low around 63. South southeast wind around 10 mph.

    Slight Chance
    T-storms then
    Chance
    Showers

    Low: 63 °F

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before noon.  Mostly cloudy, with a high near 72. South southwest wind 5 to 15 mph becoming north in the afternoon.

    Chance
    Showers then
    Slight Chance
    T-storms

    High: 72 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 45. North wind 5 to 10 mph.

    Partly Cloudy

    Low: 45 °F

  • Saturday

    Saturday: Sunny, with a high near 70. North wind 5 to 10 mph.

    Sunny

    High: 70 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 43. North northwest wind around 5 mph.

    Mostly Clear

    Low: 43 °F

  • Sunday

    Sunday: Sunny, with a high near 72. North northwest wind around 5 mph becoming south in the afternoon.

    Sunny

    High: 72 °F

Detailed Forecast

This Afternoon
Partly sunny, with a high near 81. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 64. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before noon. Cloudy, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 63. South southeast wind around 10 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, with a high near 72. South southwest wind 5 to 15 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 45. North wind 5 to 10 mph.
Saturday
Sunny, with a high near 70. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 43. North northwest wind around 5 mph.
Sunday
Sunny, with a high near 72. North northwest wind around 5 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 48.
Monday
Mostly sunny, with a high near 76.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 74.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
2:09 pm CST Nov 20, 2019
2pm CST Nov 20, 2019-6pm CST Nov 26, 2019
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database