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

80°F

27°C

Humidity 74%
Wind Speed NW 3 mph
Barometer 29.90 in (1011.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 2 Aug 1:56 am CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 75. North northwest wind around 5 mph.

    Low: 75 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. North northwest wind around 5 mph becoming northeast in the morning.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Wednesday Night

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

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 75. North northwest wind around 5 mph.
Sunday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. North northwest wind around 5 mph becoming northeast in the morning.
Sunday Night
Clear, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74. South wind around 5 mph.
Tuesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 98. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
Mostly clear, with a low around 76.
Friday
Mostly sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 76.
Saturday
Mostly sunny, with a high near 97.
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Forecast Area
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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:
1:34 am CDT Aug 2, 2026
Forecast Valid:
2am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
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Additional Resources

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Chance of Precipitation