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Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
58°F
14°C
| Humidity | 58% |
| Wind Speed | Calm |
| Barometer | 30.28 in (1025.1 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 10:56 pm CDT |
Extended Forecast for
San Marcos TX
Tonight
Low: 53 °F
Partly Cloudy
Monday
High: 78 °F
Partly Sunny
Monday Night
Low: 58 °F
Partly Cloudy
Tuesday
High: 83 °F
Sunny
Tuesday Night
Low: 58 °F
Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 59 °F
Clear
Thursday
High: 86 °F
Sunny
Thursday Night
Low: 60 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 53. Calm wind.
Monday
Partly sunny, with a high near 78. Calm wind becoming east northeast around 5 mph.
Monday Night
Partly cloudy, with a low around 58. Calm wind.
Tuesday
Sunny, with a high near 83. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 58. East northeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 85. Calm wind becoming east northeast around 5 mph.
Wednesday Night
Clear, with a low around 59. Calm wind.
Thursday
Sunny, with a high near 86. Calm wind becoming southeast around 5 mph.
Thursday Night
Mostly clear, with a low around 60. Calm wind.
Friday
Mostly sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Partly sunny, with a high near 85.
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)
11:32 pm CDT Oct 18, 2026
11pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
Additional Resources
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Hourly Weather Forecast
