Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
51°F
11°C
| Humidity | 46% |
| Wind Speed | S 10 mph |
| Barometer | 30.22 in (1023.2 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 47°F (8°C) |
| Last update | 17 Mar 11:56 pm CDT |
Extended Forecast for
3 Miles WSW San Marcos TX
Overnight
Low: 43 °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: 92 °F
Sunny
Friday Night
Low: 59 °F
Clear
Saturday
High: 94 °F
Sunny
Saturday Night
Low: 60 °F
Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 43. South wind 5 to 10 mph.
Wednesday
Sunny, with a high near 78. South southwest 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 92. West southwest wind around 5 mph.
Friday Night
Clear, with a low around 59. South wind around 5 mph.
Saturday
Sunny, with a high near 94. South wind 5 to 10 mph.
Saturday Night
Clear, with a low around 60. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
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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)
12:46 am CDT Mar 18, 2026
12am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
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