Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

81°F

27°C

Humidity 85%
Wind Speed S 9 mph
Barometer 29.95 in (1013.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 19 Aug 2:56 am CDT
Extended Forecast for

4 Miles SSW San Marcos TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 77. South wind 5 to 10 mph.

    Mostly Cloudy

    Low: 77 °F

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing and hot, with a high near 101. Heat index values as high as 108. South wind 5 to 10 mph.

    Hot

    High: 101 °F

  • Monday
    Night

    Monday Night: Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph.

    Increasing
    Clouds

    Low: 75 °F

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 100. Heat index values as high as 106. South wind 5 to 10 mph.

    Hot

    High: 100 °F

  • Tuesday
    Night

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

    Partly Cloudy

    Low: 74 °F

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    Hot

    High: 100 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 74. Southeast wind 5 to 15 mph.

    Partly Cloudy

    Low: 74 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 98. South wind 5 to 10 mph.

    Mostly Sunny

    High: 98 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 74. South wind 5 to 15 mph.

    Partly Cloudy

    Low: 74 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 77. South wind 5 to 10 mph.
Monday
Cloudy through mid morning, then gradual clearing and hot, with a high near 101. Heat index values as high as 108. South wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph.
Tuesday
Mostly sunny and hot, with a high near 100. Heat index values as high as 106. South wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph.
Wednesday
Mostly sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 74. Southeast wind 5 to 15 mph.
Thursday
Mostly sunny, with a high near 98. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 74. South wind 5 to 15 mph.
Friday
Mostly sunny, with a high near 98.
Friday Night
Partly cloudy, with a low around 74.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 97.
Saturday Night
Partly cloudy, with a low around 74.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 96.
Click Map For Forecast
Point Forecast:
4 Miles SSW San Marcos TX
 29.83°N 97.94°W (Elev. 610 ft)
3:01 am CDT Aug 19, 2019
3am CDT Aug 19, 2019-6pm CDT Aug 25, 2019
 
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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