Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
72°F
22°C
| Humidity | 53% |
| Wind Speed | N 17 G 22 mph |
| Barometer | 30.03 in (1016.6 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 15 Feb 1:56 pm CST |
Extended Forecast for
4 Miles NNW San Marcos Municipal Airport TX
This Afternoon

High: 74 °F
Sunny
Tonight

Low: 46 °F
Mostly Clear
Washington's Birthday

High: 77 °F
Sunny
Monday Night

Low: 52 °F
Increasing
CloudsTuesday

High: 82 °F
Mostly Sunny
Tuesday Night

Low: 58 °F
Partly Cloudy
Wednesday

High: 83 °F
Partly Sunny
Wednesday Night

Low: 61 °F
Mostly Cloudy
Thursday

High: 83 °F
Mostly Cloudy
Detailed Forecast
This Afternoon
Sunny, with a high near 74. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 46. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 52. South wind around 5 mph.
Tuesday
Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 58. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 83. South southwest wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 61. South southeast wind around 5 mph.
Thursday
Mostly cloudy, with a high near 83. South southwest wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 60.
Friday
Partly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 75.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles NNW San Marcos Municipal Airport TX
29.95°N 97.89°W (Elev. 646 ft)
29.95°N 97.89°W (Elev. 646 ft)
12:44 pm CST Feb 15, 2026
2pm CST Feb 15, 2026-6pm CST Feb 21, 2026


