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

82°F

28°C

Humidity 74%
Wind Speed N 5 mph
Barometer 30.07 in (1017.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 23 Sep 8:56 am CDT
Extended Forecast for

Kyle TX

  • Today

    Today: Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 73. East southeast wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming east around 5 mph in the morning.

    High: 97 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 97. Calm wind becoming south around 5 mph.

    High: 97 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 72. Southeast wind around 5 mph.

    Low: 72 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 97. Calm wind becoming south southwest around 5 mph.

    High: 97 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming east around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 73. East southeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming east around 5 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.
Saturday
Partly sunny, with a high near 97. Calm wind becoming south around 5 mph.
Saturday Night
Mostly cloudy, with a low around 72. Southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 97. Calm wind becoming south southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 97.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30°N 97.86°W (Elev. 699 ft)
Last Update:
6:42 am CDT Sep 23, 2026
Forecast Valid:
9am CDT Sep 23, 2026-6pm CDT Sep 29, 2026
 
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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