National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

71°F

22°C

Humidity 90%
Wind Speed S 12 mph
Barometer 29.93 in (1012.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 15 May 2:56 am CDT
Extended Forecast for

3 Miles NW Driftwood TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. South wind around 10 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 89 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 74. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 74 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 88. South southeast wind around 15 mph, with gusts as high as 30 mph.

    High: 88 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 77. South southeast wind around 15 mph, with gusts as high as 30 mph.

    Low: 77 °F

    Mostly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 89. South southeast wind around 15 mph, with gusts as high as 30 mph.

    High: 89 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 76. South southeast wind around 15 mph, with gusts as high as 30 mph.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. South wind around 10 mph, with gusts as high as 25 mph.
Friday
Mostly cloudy, with a high near 89. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 89. South wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 74. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, with a high near 88. South southeast wind around 15 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 77. South southeast wind around 15 mph, with gusts as high as 30 mph.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 89. South southeast wind around 15 mph, with gusts as high as 30 mph.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 76. South southeast wind around 15 mph, with gusts as high as 30 mph.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 89.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Driftwood TX
 30.15°N 98.05°W (Elev. 1056 ft)
Last Update:
2:44 am CDT May 15, 2026
Forecast Valid:
3am CDT May 15, 2026-6pm CDT May 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation