Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
51°F
11°C
| Humidity | 89% |
| Wind Speed | SW 5 mph |
| Barometer | 30.20 in (1022.2 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 49°F (9°C) |
| Last update | 19 Mar 6:56 am CDT |
Extended Forecast for
San Marcos TX
Today
High: 85 °F
Sunny
Tonight
Low: 53 °F
Clear
Friday
High: 89 °F
Sunny
Friday Night
Low: 57 °F
Clear
Saturday
High: 93 °F
Sunny
Saturday Night
Low: 59 °F
Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 58 °F
Mostly Clear
Monday
High: 89 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 85. Southwest wind 5 to 10 mph.
Tonight
Clear, with a low around 53. South wind around 5 mph.
Friday
Sunny, with a high near 89. South southwest wind 5 to 10 mph.
Friday Night
Clear, with a low around 57. South wind around 5 mph.
Saturday
Sunny, with a high near 93. South wind 5 to 10 mph.
Saturday Night
Clear, with a low around 59. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 93. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 58. South wind 5 to 10 mph.
Monday
Sunny, with a high near 89. Southwest wind around 5 mph becoming northeast in the afternoon.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
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 97.91°W (Elev. 597 ft)
29.88°N 97.91°W (Elev. 597 ft)
6:42 am CDT Mar 19, 2026
7am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
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