Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
35°F
2°C
| Humidity | 89% |
| Wind Speed | NW 7 mph |
| Barometer | 30.45 in (1031.2 mb) |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 5 Feb 5:56 am CST |
Extended Forecast for
San Marcos TX
Today
High: 70 °F
Sunny
Tonight
Low: 47 °F
Clear
Friday
High: 79 °F
Sunny
Friday Night
Low: 48 °F
Clear
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 50 °F
Partly Cloudy
Sunday
High: 77 °F
Partly Sunny
Sunday Night
Low: 53 °F
Mostly Cloudy
Monday
High: 76 °F
Mostly Cloudy
Detailed Forecast
Today
Sunny, with a high near 70. West northwest wind around 5 mph.
Tonight
Clear, with a low around 47. West wind around 5 mph.
Friday
Sunny, with a high near 79. West northwest wind around 5 mph becoming east northeast in the afternoon.
Friday Night
Clear, with a low around 48. Calm wind.
Saturday
Sunny, with a high near 80. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. South southeast wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 77. Calm wind becoming south around 5 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 53. South wind around 5 mph.
Monday
Mostly cloudy, with a high near 76. South wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 76.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 56.
Wednesday
Mostly 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)
5:42 am CST Feb 5, 2026
6am CST Feb 5, 2026-6pm CST Feb 11, 2026
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