Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
71°F
22°C
| Humidity | 90% |
| Wind Speed | S 10 mph |
| Barometer | 29.95 in (1013.6 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 10 Mar 6:56 am CDT |
Extended Forecast for
San Marcos TX
Today
High: 83 °F
Chance
ShowersTonight
Low: 62 °F
Slight Chance
T-storms then
Showers
LikelyWednesday
High: 81 °F
Showers
LikelyWednesday Night
Low: 50 °F
Chance
T-storms then
Slight Chance
ShowersThursday
High: 68 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Friday
High: 78 °F
Sunny
Friday Night
Low: 53 °F
Clear
Saturday
High: 84 °F
Sunny
Detailed Forecast
Today
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Cloudy, with a high near 83. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A slight chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 62. South southeast wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy through mid morning, then gradual clearing, with a high near 81. Northeast wind 5 to 10 mph becoming west southwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 50. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 68. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 46. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 78. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 53. South wind around 5 mph.
Saturday
Sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Partly sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 50.
Monday
Mostly sunny, with a high near 67.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
7:22 am CDT Mar 10, 2026
7am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
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