Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
72°F
22°C
| Humidity | 33% |
| Wind Speed | S 8 mph |
| Barometer | 30.14 in (1020.2 mb) |
| Dewpoint | 41°F (5°C) |
| Visibility | 10.00 mi |
| Last update | 18 Mar 7:56 pm CDT |
Extended Forecast for
San Marcos TX
Tonight
Low: 50 °F
Mostly Clear
Thursday
High: 84 °F
Becoming
SunnyThursday Night
Low: 53 °F
Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 56 °F
Clear
Saturday
High: 92 °F
Sunny
Saturday Night
Low: 58 °F
Clear
Sunday
High: 92 °F
Sunny
Sunday Night
Low: 57 °F
Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 50. Southwest wind around 5 mph.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 84. Southwest wind 5 to 10 mph.
Thursday Night
Clear, with a low around 53. South wind around 5 mph.
Friday
Sunny, with a high near 91. Southwest wind 5 to 10 mph.
Friday Night
Clear, with a low around 56. South wind around 5 mph.
Saturday
Sunny, with a high near 92. South southwest wind 5 to 10 mph.
Saturday Night
Clear, with a low around 58. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 92. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 57. South wind 5 to 10 mph.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 91.
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)
7:44 pm CDT Mar 18, 2026
8pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026
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