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.

Fair

100°F

38°C

Humidity 37%
Wind Speed S 9 mph
Barometer 29.94 in (1012.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 2 Sep 1:56 pm CDT
Extended Forecast for

Kyle TX

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 99. Heat index values as high as 106. South southwest wind around 5 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 106. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 97. South wind around 5 mph. Chance of precipitation is 20%.

    High: 97 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm after midnight.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 99. Heat index values as high as 106. South southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 106. South southwest wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 97. South wind around 5 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind around 5 mph becoming calm after midnight.
Sunday
Sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 75.
Labor Day
Sunny, with a high near 97.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 29.99°N 97.89°W (Elev. 791 ft)
Last Update:
1:36 pm CDT Sep 2, 2026
Forecast Valid:
2pm CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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