Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Mostly Cloudy
69°F
21°C
| Humidity | 96% |
| Wind Speed | S 8 mph |
| Barometer | 29.90 in (1011.8 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 5:56 am CDT |
Extended Forecast for
2 Miles SW San Marcos Municipal Airport TX
Today
High: 90 °F
Decreasing
CloudsTonight
Low: 66 °F
Mostly Cloudy
Saturday
High: 73 °F⇓
Chance
Showers then
Chance
T-stormsSaturday Night
Low: 52 °F
Showers
LikelySunday
High: 73 °F
Partly Sunny
Sunday Night
Low: 54 °F
Mostly Cloudy
Monday
High: 68 °F
Chance
Showers then
Chance
T-stormsMonday Night
Low: 57 °F
Chance
Showers then
Chance
T-stormsTuesday
High: 75 °F
Chance
Showers then
Chance
T-storms
Detailed Forecast
Today
Cloudy, then gradually becoming mostly sunny, with a high near 90. South wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 66. South southeast wind 5 to 15 mph, with gusts as high as 30 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Cloudy, with a temperature rising to near 73 by 10am, then falling to around 64 during the remainder of the day. South wind 5 to 10 mph becoming north 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 52. North wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 73. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 54. East northeast wind 5 to 10 mph becoming light in the evening.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 68. East northeast wind 5 to 10 mph. Chance of precipitation is 50%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 57. East wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 75. East southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 64.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles SW San Marcos Municipal Airport TX
29.88°N 97.89°W (Elev. 597 ft)
29.88°N 97.89°W (Elev. 597 ft)
6:44 am CDT Apr 17, 2026
6am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
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