Hazardous Weather Conditions
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
40°F
4°C
| Humidity | 33% |
| Wind Speed | Calm |
| Barometer | 30.39 in (1028.8 mb) |
| Dewpoint | 13°F (-11°C) |
| Visibility | 10.00 mi |
| Last update | 17 Mar 1:56 am CDT |
Extended Forecast for
San Marcos TX
Overnight
Low: 34 °F
Mostly Clear
Tuesday
High: 66 °F
Sunny
Tuesday Night
Low: 44 °F
Mostly Clear
Wednesday
High: 78 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 55 °F
Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 58 °F
Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 34. Calm wind.
Tuesday
Sunny, with a high near 66. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 44. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 51. South wind around 5 mph.
Thursday
Sunny, with a high near 84. Southwest wind 5 to 10 mph.
Thursday Night
Clear, with a low around 55. 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 58. South wind around 5 mph.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 60.
Monday
Mostly sunny, with a high near 89.
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)
1:24 am CDT Mar 17, 2026
2am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
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