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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Partly Cloudy

99°F

37°C

Humidity 33%
Wind Speed S 9 mph
Barometer 29.99 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 20 Jul 5:45 pm CDT
Extended Forecast for

San Marcos TX

  • Tonight

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

    Partly Cloudy

    Low: 74 °F

  • Friday

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

    Hot

    High: 99 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.

    Partly Cloudy

    Low: 76 °F

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.

    Hot

    High: 99 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.

    Partly Cloudy

    Low: 76 °F

  • Sunday

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

    Hot

    High: 99 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 76. South wind 5 to 10 mph.

    Partly Cloudy

    Low: 76 °F

  • Monday

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

    Hot

    High: 99 °F

  • Monday
    Night

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

    Partly Cloudy

    Low: 75 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph.
Friday
Mostly sunny and hot, with a high near 99. Heat index values as high as 104. South wind around 5 mph.
Friday Night
Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.
Saturday
Mostly sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.
Sunday
Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 76. South wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
Mostly sunny and hot, with a high near 97.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
Mostly sunny and hot, with a high near 97.
Click Map For Forecast
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
2:31 pm CDT Jul 20, 2017
5pm CDT Jul 20, 2017-6pm CDT Jul 27, 2017
 
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