Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Partly Cloudy
34°C
94°F
| Humidity | 51% |
| Wind Speed | SW 11 km/h |
| Barometer | 1015.3 mb (30.01 in) |
| Dewpoint | 23°C (73°F) |
| Visibility | 16 km |
| Heat Index | 40°C (104°F) |
| Last update | 14 Jul 3:56 pm CDT |
Extended Forecast for
San Marcos Municipal Airport TX
This Afternoon
High: 33 °C
Chance
T-stormsTonight
Low: 24 °C
Chance
T-storms then
Mostly CloudyTuesday
High: 34 °C
Decreasing
CloudsTuesday Night
Low: 23 °C
Partly Cloudy
Wednesday
High: 36 °C
Mostly Sunny
Wednesday Night
Low: 22 °C
Partly Cloudy
Thursday
High: 35 °C
Mostly Sunny
Thursday Night
Low: 22 °C
Partly Cloudy
Friday
High: 34 °C
Mostly Sunny
Detailed Forecast
This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 33. Heat index values as high as 38. South southeast wind around 10 km/h.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 24. South wind around 10 km/h.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 34. Heat index values as high as 39. South southeast wind 5 to 10 km/h increasing to 10 to 15 km/h in the afternoon. Winds could gust as high as 30 km/h.
Tuesday Night
Partly cloudy, with a low around 23. South southeast wind 10 to 15 km/h.
Wednesday
Mostly sunny, with a high near 36. South wind 10 to 20 km/h, with gusts as high as 35 km/h.
Wednesday Night
Partly cloudy, with a low around 22. South southeast wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Winds could gust as high as 35 km/h.
Thursday
Mostly sunny, with a high near 35. South wind 10 to 15 km/h.
Thursday Night
Partly cloudy, with a low around 22. Southeast wind 5 to 15 km/h becoming south southwest after midnight.
Friday
Mostly sunny, with a high near 34. South southwest wind 5 to 10 km/h.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 36.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos Municipal Airport TX
29.88°N 97.86°W (Elev. 600 m)
29.88°N 97.86°W (Elev. 600 m)
3:42 pm CDT Jul 14, 2025
4pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025
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