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

80°F

27°C

Humidity 87%
Wind Speed S 7 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 4 Aug 4:56 am CDT
Extended Forecast for

3 Miles NE Kyle TX

  • Today

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

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 98. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 98 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Thursday

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

    High: 98 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 97. South wind around 5 mph.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 95. Calm wind becoming southeast around 5 mph in the morning.

    High: 95 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 98. Heat index values as high as 104. South wind 5 to 10 mph.
Wednesday Night
Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 98. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 76. Southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 97. South wind around 5 mph.
Friday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 76. Southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 95. Calm wind becoming southeast around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 76.
Monday
Mostly sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Kyle TX
 30.02°N 97.84°W (Elev. 702 ft)
Last Update:
2:42 am CDT Aug 4, 2026
Forecast Valid:
5am CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation