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

72°F

22°C

Humidity 87%
Wind Speed SE 12 mph
Barometer 29.95 in (1013.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 15 Apr 2:56 am CDT
Extended Forecast for

3 Miles SSE Buda TX

  • Overnight

    Overnight: Cloudy, with a low around 68. South wind around 10 mph.

    Low: 68 °F

    Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Increasing clouds, with a low around 67. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Chance
    T-storms

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 88 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 89. South wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 89 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 53. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Cloudy, with a low around 68. South wind around 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Increasing clouds, with a low around 67. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Cloudy, then gradually becoming mostly 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 68. South southeast wind around 10 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 89. South wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 66. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 53. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday
Mostly cloudy, with a high near 69.
Sunday Night
A 20 percent chance of showers. Cloudy, with a low around 54.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 67.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Buda TX
 30.04°N 97.81°W (Elev. 650 ft)
Last Update:
2:42 am CDT Apr 15, 2026
Forecast Valid:
3am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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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