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

96°F

36°C

Humidity 43%
Wind Speed Vrbl 3 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 28 Aug 12:56 pm CDT
Extended Forecast for

Kyle TX

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east around 5 mph.

    High: 98 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Heat index values as high as 103. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Saturday Night

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

    Low: 74 °F

    Mostly Clear

  • Sunday

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

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly 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

  • Tuesday

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

    High: 98 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east around 5 mph.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 98. Heat index values as high as 103. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming south southwest after midnight.
Sunday
Sunny, with a high near 98. South southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 74. 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. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Mostly sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30°N 97.86°W (Elev. 699 ft)
Last Update:
12:42 pm CDT Aug 28, 2026
Forecast Valid:
1pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation