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Hazardous Weather Conditions
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
74°F
23°C
| Humidity | 97% |
| Wind Speed | NE 5 mph |
| Barometer | 29.92 in (1012.3 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Last update | 2 Oct 12:56 am CDT |
Extended Forecast for
San Marcos TX
Flood Watch October 2, 01:41am until October 2, 07:00pm
NOW until 7:00pm Fri
Flood Watch
Overnight
Low: 72 °F
Showers
LikelyFriday
High: 80 °F
Showers
LikelyFriday Night
Low: 70 °F
Showers
LikelySaturday
High: 81 °F
Chance
ShowersSaturday Night
Low: 71 °F
Chance
ShowersSunday
High: 81 °F
Chance
ShowersSunday Night
Low: 70 °F
Mostly Cloudy
Monday
High: 82 °F
Mostly Sunny
Detailed Forecast
Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 72. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 70. North northeast 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.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. North wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 70. North wind around 10 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 82. North northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 65. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 87.
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)
1:34 am CDT Oct 2, 2026
1am CDT Oct 2, 2026-6pm CDT Oct 8, 2026
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