Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
75°F
24°C
| Humidity | 84% |
| Wind Speed | SW 5 mph |
| Barometer | 29.99 in (1015.0 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Last update | 9 Mar 1:56 pm CDT |
Extended Forecast for
5 Miles SW San Marcos TX
This Afternoon
High: 80 °F
Partly Sunny
Tonight
Low: 68 °F
Mostly Cloudy
Tuesday
High: 83 °F
Cloudy
Tuesday Night
Low: 64 °F
Slight Chance
T-storms then
ShowersWednesday
High: 81 °F
Chance
T-storms then
Chance
ShowersWednesday Night
Low: 49 °F
Slight Chance
T-storms then
Mostly ClearThursday
High: 70 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Friday
High: 80 °F
Sunny
Detailed Forecast
This Afternoon
Partly sunny, with a high near 80. South wind around 10 mph.
Tonight
Mostly cloudy, with a low around 68. South southeast wind around 10 mph.
Tuesday
Cloudy, with a high near 83. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 64. South southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday
A 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. Mostly sunny, with a high near 81. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 49. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 46. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 54.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 89.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT 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)
1:46 pm CDT Mar 9, 2026
2pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
