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Severe Thunderstorms over the Plains, Heavy Rain Threat Continues over Portions of the Mississippi Valley

Heavy rainfall with localized flooding will remain possible over portions of the Mississippi Valley and the Plains through midweek. In addition, severe thunderstorms will be possible over the southern and central Plains. Some of the storms could contain damaging winds and large hail. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

San Marcos Municipal Airport TX

  • Today

    Today: Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 107. South wind 10 to 15 mph.

    Hot

    High: 99 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Partly Cloudy

    Low: 76 °F

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South wind 5 to 10 mph.

    Hot

    High: 99 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 75. South wind around 10 mph.

    Mostly Clear

    Low: 75 °F

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph becoming southeast in the afternoon.

    Hot

    High: 100 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Mostly Clear

    Low: 75 °F

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    Hot

    High: 99 °F

  • Sunday
    Night

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

    Mostly Clear

    Low: 75 °F

  • Monday

    Monday: Mostly sunny and hot, with a high near 98. Southeast wind 5 to 10 mph.

    Hot

    High: 98 °F

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 107. South wind 10 to 15 mph.
Tonight
Partly cloudy, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 75. South wind around 10 mph.
Saturday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Sunday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 98. Southeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
Mostly 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 98.
Click Map For Forecast
Point Forecast:
San Marcos Municipal Airport TX
 29.9°N 97.86°W (Elev. 600 ft)
2:47 am CDT Aug 17, 2017
5am CDT Aug 17, 2017-6pm CDT Aug 23, 2017
 
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Additional Resources

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