Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
73°F
23°C
| Humidity | 81% |
| Wind Speed | SE 12 mph |
| Barometer | 29.93 in (1012.7 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 7 Mar 7:56 am CST |
Extended Forecast for
San Marcos TX
Today
High: 83 °F
Chance
Showers then
ShowersTonight
Low: 55 °F
T-storms
LikelySunday
High: 71 °F
Showers
Likely then
Chance
T-stormsSunday Night
Low: 61 °F
Chance
Showers then
Slight Chance
T-stormsMonday
High: 83 °F
Chance
ShowersMonday Night
Low: 67 °F
Mostly Cloudy
then Slight
Chance
T-stormsTuesday
High: 83 °F
Chance
ShowersTuesday Night
Low: 61 °F
Showers
LikelyWednesday
High: 81 °F
Chance
Showers
Detailed Forecast
Today
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 83. South southeast wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Cloudy, with a low around 55. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 71. North wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then a slight chance of showers and thunderstorms after midnight. Cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
A chance of showers, with thunderstorms also possible after 9am. Cloudy, with a high near 83. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of showers and thunderstorms after midnight. Cloudy, with a low around 67. South southeast wind around 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 83. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South southeast wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Wednesday
A 30 percent chance of showers, mainly before noon. Sunny, with a high near 81. South southwest wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 70.
Thursday Night
Clear, with a low around 45.
Friday
Sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.88°N 97.91°W (Elev. 597 ft)
29.88°N 97.91°W (Elev. 597 ft)
5:44 am CST Mar 7, 2026
8am CST Mar 7, 2026-6pm CDT Mar 13, 2026
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