Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
67°F
19°C
| Humidity | 31% |
| Wind Speed | N 17 G 21 mph |
| Barometer | 30.36 in (1027.9 mb) |
| Dewpoint | 35°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 4 Feb 2:56 pm CST |
Extended Forecast for
San Marcos TX
This Afternoon
High: 66 °F
Mostly Sunny
Tonight
Low: 39 °F
Clear
Thursday
High: 69 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Friday
High: 78 °F
Sunny
Friday Night
Low: 47 °F
Clear
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 49 °F
Partly Cloudy
Sunday
High: 78 °F
Partly Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 66. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 39. North wind 5 to 10 mph.
Thursday
Sunny, with a high near 69. West northwest wind around 5 mph.
Thursday Night
Clear, with a low around 46. West wind around 5 mph.
Friday
Sunny, with a high near 78. West wind around 5 mph becoming northeast in the afternoon.
Friday Night
Clear, with a low around 47. Calm wind.
Saturday
Sunny, with a high near 79. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. South wind around 5 mph.
Sunday
Partly sunny, with a high near 78. South wind around 5 mph.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Mostly cloudy, with a high near 77.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 56.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 76.
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)
2:32 pm CST Feb 4, 2026
3pm CST Feb 4, 2026-6pm CST Feb 10, 2026
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