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.

Overcast

78°F

26°C

Humidity 90%
Wind Speed S 7 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 31 Jul 2:56 am CDT
Extended Forecast for

Kyle TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 74. South southwest wind 5 to 10 mph.

    Low: 74 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 103. South southwest wind 5 to 10 mph.

    High: 98 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Heat index values as high as 105. Southwest wind around 5 mph becoming calm in the afternoon.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 76. East northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 98. West northwest wind around 5 mph becoming north northeast in the afternoon.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Northeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. West southwest wind around 5 mph becoming south in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. South southwest wind 5 to 10 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 103. South southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Heat index values as high as 105. Southwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 76. East northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 98. West northwest wind around 5 mph becoming north northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 76. Northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 99. West southwest wind around 5 mph becoming south in the afternoon.
Monday Night
Clear, with a low around 76. South wind 5 to 10 mph.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Mostly sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Mostly sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 29.99°N 97.89°W (Elev. 791 ft)
Last Update:
2:42 am CDT Jul 31, 2026
Forecast Valid:
3am CDT Jul 31, 2026-6pm CDT Aug 6, 2026
 
Forecast Discussion
 
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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