Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Thunderstorm and Breezy
73°F
23°C
| Humidity | 76% |
| Wind Speed | NW 21 G 28 mph |
| Barometer | 29.91 in (1012.1 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 11 Mar 1:56 am CDT |
Extended Forecast for
San Marcos TX
Overnight
Low: 63 °F
Showers
Wednesday
High: 84 °F
Showers then
Slight Chance
T-stormsWednesday Night
Low: 45 °F
Slight Chance
T-storms then
ClearThursday
High: 68 °F
Sunny
Thursday Night
Low: 43 °F
Clear
Friday
High: 79 °F
Sunny
Friday Night
Low: 51 °F
Clear
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 60 °F
Partly Cloudy
Detailed Forecast
Overnight
Showers and possibly a thunderstorm. Low around 63. North northwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and thunderstorms, mainly before 10am. High near 84. North wind 5 to 10 mph becoming west southwest in the morning. 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.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 45. North wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 68. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 43. Northeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 79. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 51. South wind around 5 mph.
Saturday
Sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 60. South southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Partly sunny, with a high near 65.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 73.
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)
1:46 am CDT Mar 11, 2026
2am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
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