National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

69°F

21°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.95 in (1013.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 12 Jun 7:56 am CDT
Extended Forecast for

Niederwald TX

Flood Watch June 12, 08:07am until June 12, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 12, 08:07am until June 12, 07:00pm

    NOW until 7:00pm Thu

    Flood Watch

  • Today

    High: 86 °F

    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 73. South wind 5 to 10 mph.

    Low: 73 °F

    Increasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 106. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. South wind 5 to 10 mph.

    High: 93 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind 5 to 10 mph.

    High: 94 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74. South wind 5 to 10 mph.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Today
Showers and thunderstorms, mainly before 10am. High near 86. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Increasing clouds, with a low around 73. South wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 106. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 74. South wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 94. South wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny, with a high near 96.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30°N 97.76°W (Elev. 564 ft)
Last Update:
6:42 am CDT Jun 12, 2025
Forecast Valid:
8am CDT Jun 12, 2025-6pm CDT Jun 18, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation