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Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
80°F
27°C
| Humidity | 29% |
| Wind Speed | Calm |
| Barometer | 30.17 in (1021.1 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 19 Oct 3:56 pm CDT |
Extended Forecast for
San Marcos TX
Tonight
Low: 58 °F
Mostly Clear
Tuesday
High: 82 °F
Sunny
Tuesday Night
Low: 57 °F
Clear
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 59 °F
Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 57 °F
Mostly Clear
Friday
High: 84 °F
Sunny
Friday Night
Low: 60 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 58. Calm wind.
Tuesday
Sunny, with a high near 82. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 57. East northeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 83. East northeast wind around 5 mph.
Wednesday Night
Clear, with a low around 59. Calm wind.
Thursday
Sunny, with a high near 84. Calm wind becoming east around 5 mph.
Thursday Night
Mostly clear, with a low around 57. East wind around 5 mph becoming calm.
Friday
Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60. East southeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 82.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 81.
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)
3:42 pm CDT Oct 19, 2026
4pm CDT Oct 19, 2026-6pm CDT Oct 26, 2026
Additional Resources
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