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 39%
Wind Speed S 18 G 22 mph
Barometer 30.04 in (1016.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 9 Jul 1:56 pm CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 97. Heat index values as high as 101. South wind around 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 100. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southeast wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 93 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 77. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 94 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 94 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 97. Heat index values as high as 101. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 75. South wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 100. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southeast wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 77. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
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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:
1:32 pm CDT Jul 9, 2026
Forecast Valid:
2pm CDT Jul 9, 2026-6pm CDT Jul 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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