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Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
60°F
16°C
| Humidity | 60% |
| Wind Speed | Calm |
| Barometer | 30.28 in (1024.9 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 8:56 am CDT |
Extended Forecast for
San Marcos TX
Today
High: 80 °F
Mostly Sunny
Tonight
Low: 57 °F
Partly Cloudy
Tuesday
High: 84 °F
Sunny
Tuesday Night
Low: 58 °F
Mostly Clear
Wednesday
High: 86 °F
Sunny
Wednesday Night
Low: 59 °F
Mostly Clear
Thursday
High: 88 °F
Sunny
Thursday Night
Low: 58 °F
Mostly Clear
Friday
High: 88 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 80. Calm wind becoming east around 5 mph.
Tonight
Partly cloudy, with a low around 57. Calm wind.
Tuesday
Sunny, with a high near 84. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 58. East northeast wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 86. East northeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 59. East wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 88. Calm wind becoming east southeast around 5 mph.
Thursday Night
Mostly clear, with a low around 58. East wind around 5 mph becoming calm.
Friday
Sunny, with a high near 88. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Partly sunny, with a high near 86.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.88°N 97.91°W (Elev. 597 ft)
29.88°N 97.91°W (Elev. 597 ft)
6:42 am CDT Oct 19, 2026
9am CDT Oct 19, 2026-6pm CDT Oct 25, 2026
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