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

77°F

25°C

Humidity 85%
Wind Speed S 5 mph
Barometer 30.15 in (1020.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 16 Aug 1:56 am CDT
Extended Forecast for

3 Miles NE Kyle TX

  • Overnight

    Overnight: Partly cloudy, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.

    High: 100 °F

    Hot

  • Sunday Night

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

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Heat index values as high as 102. Southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

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

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 77. South wind 5 to 10 mph.

    Low: 77 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. South wind around 5 mph.
Sunday
Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.
Sunday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 102. Southwest wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 99. South southwest wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 77. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 101.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 77.
Saturday
Mostly sunny and hot, with a high near 101.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Kyle TX
 30.02°N 97.84°W (Elev. 702 ft)
Last Update:
2:42 am CDT Aug 16, 2026
Forecast Valid:
2am CDT Aug 16, 2026-6pm CDT Aug 22, 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