Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
72°F
22°C
| Humidity | 82% |
| Wind Speed | S 17 G 23 mph |
| Barometer | 29.80 in (1008.4 mb) |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 2 Apr 2:56 am CDT |
Extended Forecast for
5 Miles SW San Marcos TX
Overnight

Low: 69 °F
Slight Chance
ShowersThursday

High: 85 °F
Chance
T-stormsThursday Night

Low: 68 °F
Increasing
CloudsFriday

High: 87 °F
Mostly Cloudy
Friday Night
Low: 69 °F
Slight Chance
T-storms then
Chance
ShowersSaturday

High: 80 °F
Showers
Saturday Night

Low: 54 °F
Chance
ShowersSunday

High: 67 °F
Chance
ShowersSunday Night

Low: 53 °F
Slight Chance
Showers
Detailed Forecast
Overnight
A 20 percent chance of showers after 4am. Cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly cloudy, with a high near 85. South wind 5 to 15 mph becoming northeast in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Increasing clouds, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly cloudy, with a high near 87. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 69. South southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 40%.
Saturday
Showers and possibly a thunderstorm. High near 80. South southeast wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers and thunderstorms. Cloudy, with a low around 54. North northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Sunday
A 30 percent chance of showers, mainly before 1pm. Cloudy, with a high near 67. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers. Cloudy, with a low around 53. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly cloudy, with a high near 72.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 78.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
5 Miles SW San Marcos TX
29.81°N 97.99°W (Elev. 653 ft)
29.81°N 97.99°W (Elev. 653 ft)
2:42 am CDT Apr 2, 2026
3am CDT Apr 2, 2026-6pm CDT Apr 8, 2026


