Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
82°F
28°C
| Humidity | 14% |
| Wind Speed | NE 6 mph |
| Barometer | 30.12 in (1019.4 mb) |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 6 Feb 4:56 pm CST |
Extended Forecast for
San Marcos TX
Tonight

Low: 48 °F
Clear
Saturday

High: 80 °F
Sunny
Saturday Night

Low: 51 °F
Partly Cloudy
Sunday

High: 75 °F
Partly Sunny
Sunday Night

Low: 56 °F
Mostly Cloudy
Monday

High: 76 °F
Mostly Cloudy
Monday Night

Low: 58 °F
Chance
ShowersTuesday

High: 77 °F
Chance
ShowersTuesday Night

Low: 56 °F
Partly Cloudy
Detailed Forecast
Tonight
Clear, with a low around 48. Calm wind becoming west northwest around 5 mph.
Saturday
Sunny, with a high near 80. North wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 51. Southeast wind around 5 mph becoming calm after midnight.
Sunday
Partly sunny, with a high near 75. Light south southwest wind becoming south 5 to 10 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 56. South wind around 5 mph.
Monday
Mostly cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 58. South wind around 5 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 56. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 74.
Additional Forecasts and Information
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ABOUT 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)
4:32 pm CST Feb 6, 2026
5pm CST Feb 6, 2026-6pm CST Feb 13, 2026


