Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
71°F
22°C
| Humidity | 94% |
| Wind Speed | S 9 mph |
| Barometer | 30.06 in (1017.1 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 12 Apr 6:56 am CDT |
Extended Forecast for
3 Miles NNW San Marcos Municipal Airport TX
Today
High: 79 °F
Showers
Likely then
T-storms
LikelyTonight
Low: 68 °F
Chance
T-stormsMonday
High: 84 °F
Patchy Fog
then Chance
T-stormsMonday Night
Low: 67 °F
Mostly Cloudy
Tuesday
High: 83 °F
Mostly Cloudy
Tuesday Night
Low: 67 °F
Mostly Cloudy
Wednesday
High: 83 °F
Cloudy then
Slight Chance
T-stormsWednesday Night
Low: 67 °F
Slight Chance
T-stormsThursday
High: 88 °F
Partly Sunny
Detailed Forecast
Today
A chance of showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then showers and thunderstorms likely after 1pm. Cloudy, with a high near 79. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 40 percent chance of showers and thunderstorms before 1am. Cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 83. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 67.
Friday
Mostly cloudy, with a high near 89.
Friday Night
Mostly cloudy, with a low around 68.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
29.95°N 97.89°W (Elev. 646 ft)
29.95°N 97.89°W (Elev. 646 ft)
6:42 am CDT Apr 12, 2026
7am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
