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.

Partly Cloudy

88°F

31°C

Humidity 63%
Wind Speed S 12 mph
Barometer 30.05 in (1016.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 5 Jul 10:56 am CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • Today

    Today: Mostly sunny, with a high near 96. Heat index values as high as 103. South wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96. Heat index values as high as 102. Southwest wind around 5 mph becoming southeast in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Monday Night

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

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 96. South southwest wind around 5 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. South southwest wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 96. Heat index values as high as 103. South wind around 5 mph.
Tonight
Partly cloudy, with a low around 76. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 96. Heat index values as high as 102. Southwest wind around 5 mph becoming southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 75. South southeast wind around 5 mph.
Tuesday
Sunny, with a high near 96. South southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph.
Wednesday
Sunny, with a high near 97. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 97. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 75.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 76.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Kyle TX
 29.97°N 97.92°W (Elev. 650 ft)
Last Update:
6:44 am CDT Jul 5, 2026
Forecast Valid:
11am CDT Jul 5, 2026-6pm CDT Jul 11, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation