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.

Thunderstorm in Vicinity Light Rain

78°F

26°C

Humidity 79%
Wind Speed Vrbl 5 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Aug 7:56 pm CDT
Extended Forecast for

Kyle TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming east around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm after midnight.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

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

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 73. Southeast wind 5 to 10 mph.

    Low: 73 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 98. South wind around 5 mph.

    High: 98 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm after midnight.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind around 5 mph becoming south after midnight.
Sunday
Sunny and hot, with a high near 99. South wind around 5 mph.
Sunday Night
Clear, with a low around 73. Southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 98. South wind around 5 mph.
Monday Night
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30.02°N 97.89°W (Elev. 797 ft)
Last Update:
7:20 pm CDT Aug 27, 2026
Forecast Valid:
8pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation