On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

First day of meteorological fall marked by above-normal temps. across much of U.S.

Above-normal temperatures are forecast across much of the contiguous U.S. on Tuesday and in some cases will be as much as 10-15 degrees above average for this time of year. Afternoon highs could reach 90 or higher from the Great Plains to the Eastern Seaboard. One exception will be across parts of the Pacific Northwest. Remember to practice heat safety if you plan to spend extended time outside.
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Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

A Few Clouds

88°F

31°C

Humidity 59%
Wind Speed S 10 G 16 mph
Barometer 30.04 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 1 Sep 12:45 pm CDT
Extended Forecast for

San Marcos TX

  • This
    Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 93. Heat index values as high as 97. South southeast wind around 10 mph.

    Slight Chance
    T-storms

    High: 93 °F

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 71. South southeast wind 5 to 15 mph.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 71 °F

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 93. Heat index values as high as 97. South southeast wind 5 to 10 mph.

    Slight Chance
    T-storms

    High: 93 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 71. South wind 5 to 10 mph.

    Partly Cloudy

    Low: 71 °F

  • Thursday

    Thursday: Partly sunny, with a high near 93. South southeast wind 5 to 10 mph.

    Partly Sunny

    High: 93 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 73. South wind 5 to 10 mph.

    Partly Cloudy

    Low: 73 °F

  • Friday

    Friday: Partly sunny, with a high near 93. Southeast wind 5 to 10 mph.

    Partly Sunny

    High: 93 °F

  • Friday
    Night

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

    Mostly Cloudy

    Low: 75 °F

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 94. South southeast wind 5 to 10 mph.

    Slight Chance
    T-storms

    High: 94 °F

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. Heat index values as high as 97. South southeast wind around 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. South southeast wind 5 to 15 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. Heat index values as high as 97. South southeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 71. South wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 93. South southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 73. South wind 5 to 10 mph.
Friday
Partly sunny, with a high near 93. Southeast wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. South southeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
Mostly sunny, with a high near 94.
Sunday Night
Partly cloudy, with a low around 74.
Labor Day
Mostly sunny, with a high near 95.
  Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
8:52 am CDT Sep 1, 2015
1pm CDT Sep 1, 2015-6pm CDT Sep 7, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database