Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
47°F
8°C
| Humidity | 50% |
| Wind Speed | Calm |
| Barometer | 30.19 in (1021.9 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Last update | 7 Feb 3:56 am CST |
Extended Forecast for
San Marcos TX
Today

High: 82 °F
Sunny
Tonight

Low: 49 °F
Partly Cloudy
Sunday

High: 76 °F
Mostly Sunny
Sunday Night

Low: 56 °F
Mostly Cloudy
Monday

High: 77 °F
Partly Sunny
Monday Night
Low: 60 °F
Mostly Cloudy
then Slight
Chance
ShowersTuesday

High: 76 °F
Chance
ShowersTuesday Night
Low: 57 °F
Slight Chance
Showers then
Partly CloudyWednesday

High: 82 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 82. North northwest wind around 5 mph becoming southeast in the afternoon.
Tonight
Partly cloudy, with a low around 49. Southeast wind around 5 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 76. Light south southwest wind becoming south 5 to 10 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 56. South southwest wind around 5 mph.
Monday
Partly sunny, with a high near 77. South wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 60. South wind around 5 mph.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 57. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 82. Southwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Partly sunny, with a high near 82.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 59.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
San Marcos TX
29.88°N 97.94°W (Elev. 577 ft)
29.88°N 97.94°W (Elev. 577 ft)
12:45 am CST Feb 7, 2026
4am CST Feb 7, 2026-6pm CST Feb 13, 2026


