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.

Light Rain

73°F

23°C

Humidity 96%
Wind Speed E 7 mph
Barometer 29.83 in (1009.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 1 Oct 6:56 pm CDT
Extended Forecast for

Niederwald TX

Flood Watch October 1, 07:10pm until October 2, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch October 1, 07:10pm until October 2, 07:00pm

    NOW until 7:00pm Fri

    Flood Watch

  • Tonight

    Low: 71 °F

    Heavy Rain

  • Friday

    Friday: Showers and thunderstorms, mainly before 1pm. High near 81. South southeast wind around 5 mph becoming northeast in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 81 °F

    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms. Low around 70. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 79. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 79 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly after 1am. Cloudy, with a low around 68. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 68 °F

    T-storms
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 67. North wind around 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 81. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 81 °F

    Partly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms. Some of the storms could produce heavy rainfall. Low around 71. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers and thunderstorms, mainly before 1pm. High near 81. South southeast wind around 5 mph becoming northeast in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers and thunderstorms. Low around 70. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 79. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely, mainly after 1am. Cloudy, with a low around 68. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 67. North wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 81. North northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 64. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Niederwald TX
 30.02°N 97.73°W (Elev. 614 ft)
Last Update:
6:44 pm CDT Oct 1, 2026
Forecast Valid:
7pm CDT Oct 1, 2026-6pm CDT Oct 8, 2026
 
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