Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

91°F

33°C

Humidity 52%
Wind Speed E 8 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 23 Sep 4:56 pm CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 98. Heat index values as high as 103. East southeast wind around 5 mph.

    High: 98 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Mostly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 98. Heat index values as high as 104. Calm wind becoming east around 5 mph in the morning.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 74. East wind around 5 mph becoming calm  in the evening.

    Low: 74 °F

    Decreasing
    Clouds

  • 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 73. East wind around 5 mph becoming calm  in the evening.

    Low: 73 °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 73. Southeast wind around 5 mph.

    Low: 73 °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

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 98. Heat index values as high as 103. East southeast wind around 5 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 74. Southeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 98. Heat index values as high as 104. Calm wind becoming east around 5 mph in the morning.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 74. 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 73. East wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 97. Calm wind becoming south around 5 mph.
Saturday Night
Mostly cloudy, with a low around 73. 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 74.
Monday
Mostly sunny, with a high near 96.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 95.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Wednesday
A 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)
3:44 pm CDT Sep 23, 2026
5pm CDT Sep 23, 2026-6pm CDT Sep 30, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database