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Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair with Haze
90°F
32°C
| Humidity | 58% |
| Wind Speed | SE 15 mph |
| Barometer | 30.01 in (1015.4 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 4.00 mi |
| Heat Index | 99°F (37°C) |
| Last update | 8 Jul 7:56 pm CDT |
Extended Forecast for
2 Miles WSW San Marcos TX
Tonight

Low: 75 °F
Mostly Clear
Thursday

High: 96 °F
Sunny
Thursday Night

Low: 75 °F
Mostly Clear
Friday
High: 93 °F
Mostly Sunny
then Slight
Chance
T-stormsFriday Night

Low: 77 °F
Partly Cloudy
Saturday

High: 94 °F
Chance
T-stormsSaturday Night

Low: 75 °F
Partly Cloudy
Sunday
High: 94 °F
Slight Chance
Showers then
Slight Chance
T-stormsSunday Night

Low: 76 °F
Slight Chance
T-storms
Detailed Forecast
Tonight
Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 96. Heat index values as high as 101. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 75. South wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 94. South southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the morning. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 94. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
2 Miles WSW San Marcos TX
29.86°N 97.97°W (Elev. 646 ft)
29.86°N 97.97°W (Elev. 646 ft)
6:44 pm CDT Jul 8, 2026
8pm CDT Jul 8, 2026-6pm CDT Jul 15, 2026


