Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
76°F
24°C
| Humidity | 85% |
| Wind Speed | S 13 mph |
| Barometer | 30.12 in (1019.3 mb) |
| Dewpoint | 71°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 77°F (25°C) |
| Last update | 13 Apr 10:56 am CDT |
Extended Forecast for
3 Miles WSW San Marcos TX
Today
High: 83 °F
Slight Chance
T-stormsTonight
Low: 67 °F
Slight Chance
T-storms then
CloudyTuesday
High: 84 °F
Mostly Cloudy
Tuesday Night
Low: 68 °F
Mostly Cloudy
Wednesday
High: 82 °F
Cloudy then
Chance
T-stormsWednesday Night
Low: 67 °F
Slight Chance
T-stormsThursday
High: 88 °F
Partly Sunny
Thursday Night
Low: 67 °F
Partly Cloudy
Friday
High: 88 °F
Mostly Cloudy
Detailed Forecast
Today
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Increasing clouds, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. 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. South southeast wind around 10 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 88. South wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 69.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 73.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles WSW San Marcos TX
29.86°N 97.97°W (Elev. 646 ft)
29.86°N 97.97°W (Elev. 646 ft)
6:42 am CDT Apr 13, 2026
11am CDT Apr 13, 2026-6pm CDT Apr 19, 2026
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