National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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 12 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 13 Oct 8:56 am CDT
Extended Forecast for

Kyle TX

  • Today

    Today: Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 75. South wind around 10 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. Heat index values as high as 101. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. South southeast wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. Calm wind becoming north around 5 mph after midnight.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. North wind around 20 mph, with gusts as high as 35 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. North wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. North wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 75. South wind around 10 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. Heat index values as high as 101. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 88. South southeast wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 65. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny, with a high near 79. North wind around 20 mph, with gusts as high as 35 mph.
Friday Night
Partly cloudy, with a low around 55. North wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday
Mostly sunny, with a high near 76. North wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 29.99°N 97.89°W (Elev. 791 ft)
Last Update:
6:42 am CDT Oct 13, 2026
Forecast Valid:
9am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation