Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Mostly Cloudy
61°F
16°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.04 in (1016.9 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 8 Mar 8:56 pm CDT |
Extended Forecast for
San Marcos Municipal Airport TX
Tonight
Low: 64 °F
Slight Chance
T-storms then
Patchy FogMonday
High: 83 °F
Slight Chance
T-storms and
Patchy FogMonday Night
Low: 66 °F
Slight Chance
T-storms then
CloudyTuesday
High: 82 °F
Slight Chance
T-storms then
Chance
ShowersTuesday Night
Low: 62 °F
Chance
Showers then
ShowersWednesday
High: 83 °F
Chance
ShowersWednesday Night
Low: 47 °F
Clear
Thursday
High: 71 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Detailed Forecast
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Patchy fog after 1am. Otherwise, cloudy, with a steady temperature around 64. Calm wind.
Monday
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 83. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 66. South wind around 10 mph. Chance of precipitation is 10%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Cloudy, with a high near 82. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 62. South southeast wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 83. South southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Clear, with a low around 47. North wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 71. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 46. East southeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 82.
Friday Night
Clear, with a low around 54.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 89.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
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 pm CDT Mar 8, 2026
9pm CDT Mar 8, 2026-6pm CDT Mar 15, 2026
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