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Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
65°F
18°C
| Humidity | 68% |
| Wind Speed | N 6 mph |
| Barometer | 29.97 in (1013.9 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 8 Oct 4:56 am CDT |
Extended Forecast for
San Marcos TX
Today
High: 90 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Friday
High: 90 °F
Sunny
Friday Night
Low: 67 °F
Mostly Clear
Saturday
High: 87 °F
Sunny
Saturday Night
Low: 66 °F
Clear
Sunday
High: 89 °F
Sunny
Sunday Night
Low: 70 °F
Mostly Clear
Columbus Day
High: 89 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 90. North northwest wind around 5 mph becoming east northeast in the afternoon.
Tonight
Mostly clear, with a low around 66. East northeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 90. Northeast wind around 5 mph.
Friday Night
Mostly clear, with a low around 67. Northeast wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 87. Northeast wind around 5 mph.
Saturday Night
Clear, with a low around 66. Calm wind.
Sunday
Sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. South southeast wind around 5 mph becoming calm after midnight.
Columbus Day
Mostly sunny, with a high near 89. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Partly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
Mostly sunny, with a high near 89.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.88°N 97.94°W (Elev. 577 ft)
29.88°N 97.94°W (Elev. 577 ft)
5:32 am CDT Oct 8, 2026
5am CDT Oct 8, 2026-6pm CDT Oct 14, 2026
Additional Resources
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