Heavy Rainfall Along the Texas Gulf Coast; Monsoon Conditions in the Southwest and Great Basin

A tropical disturbance moving onshore of the Texas Gulf Coast will bring heavy rainfall and a threat of flash and urban flooding from the Corpus Christi to Houston vicinity Thursday. A flash flood threat will exist Thursday as monsoonal moisture increases over the Southwest into the eastern Great Basin. Strong thunderstorms may impact a areas from the central Plains into the Upper Midwest. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

77°F

25°C

Humidity 88%
Wind Speed E 3 mph
Barometer 30.09 in (1018.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 29 Jun 11:56 pm CDT
Extended Forecast for

3 Miles NNW San Marcos Municipal Airport TX

  • Overnight

    Overnight: Partly cloudy, with a low around 72. South wind around 5 mph.

    Partly Cloudy

    Low: 72 °F

  • Thursday

    Thursday: Sunny, with a high near 94. Light and variable wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    Sunny

    High: 94 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 73. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 73 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 92. East northeast wind 5 to 10 mph becoming southeast in the afternoon.

    Slight Chance
    T-storms

    High: 92 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 75. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Partly Cloudy
    then Slight
    Chance
    T-storms

    Low: 75 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 95. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Slight Chance
    T-storms

    High: 95 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Partly Cloudy

    Low: 75 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 97. South wind 5 to 15 mph, with gusts as high as 25 mph.

    Mostly Sunny

    High: 97 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Mostly Clear

    Low: 75 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. South wind around 5 mph.
Thursday
Sunny, with a high near 94. Light and variable wind becoming east southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 73. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. East northeast wind 5 to 10 mph becoming southeast in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Southeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 97. South wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 97.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 100.
Click Map For Forecast
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
9:59 pm CDT Jun 29, 2022
12am CDT Jun 30, 2022-6pm CDT Jul 5, 2022
 
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