Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
58°F
14°C
| Humidity | 93% |
| Wind Speed | S 6 mph |
| Barometer | 30.00 in (1015.2 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 21 Mar 4:56 am CDT |
Extended Forecast for
3 Miles WSW San Marcos TX
Today
High: 92 °F
Sunny
Tonight
Low: 60 °F
Mostly Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 58 °F
Mostly Clear
Monday
High: 88 °F
Sunny
Monday Night
Low: 60 °F
Partly Cloudy
Tuesday
High: 89 °F
Mostly Sunny
Tuesday Night
Low: 62 °F
Mostly Clear
Wednesday
High: 91 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 92. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 60. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 93. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 58. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 88. South wind around 5 mph.
Monday Night
Partly cloudy, with a low around 60. Southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 89. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 62. South wind around 10 mph.
Wednesday
Mostly sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 90.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles WSW San Marcos TX
29.86°N 97.97°W (Elev. 646 ft)
29.86°N 97.97°W (Elev. 646 ft)
2:44 am CDT Mar 21, 2026
5am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
