Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
57°F
14°C
| Humidity | 96% |
| Wind Speed | S 7 mph |
| Barometer | 30.00 in (1015.3 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 21 Mar 5:56 am CDT |
Extended Forecast for
San Marcos TX
Today
High: 92 °F
Sunny
Tonight
Low: 60 °F
Mostly Clear
Sunday
High: 91 °F
Sunny
Sunday Night
Low: 58 °F
Mostly Clear
Monday
High: 88 °F
Sunny
Monday Night
Low: 61 °F
Partly Cloudy
Tuesday
High: 88 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 91 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 92. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 60. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 91. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 58. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 88. South wind around 5 mph.
Monday Night
Partly cloudy, with a low around 61. Southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 63. South wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 90.
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 Mar 21, 2026
6am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
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