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.

Fair

58°F

14°C

Humidity 53%
Wind Speed N 15 mph
Barometer 30.33 in (1026.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 5 Apr 9:56 am CDT
Extended Forecast for

5 Miles SSW Wimberley TX

  • Today

    Today: A 20 percent chance of showers before 4pm. Mostly cloudy, with a high near 67. North northeast wind around 15 mph, with gusts as high as 30 mph.

    High: 67 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 50. North northeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 71. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 47. Northeast wind around 5 mph.

    Low: 47 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 70. Northeast wind around 5 mph becoming east southeast in the afternoon.

    High: 70 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 51. East wind around 5 mph.

    Low: 51 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Calm wind becoming east southeast around 5 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 58. South southeast wind around 5 mph.

    Low: 58 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 80. Southeast wind 5 to 10 mph.

    High: 80 °F

    Mostly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers before 4pm. Mostly cloudy, with a high near 67. North northeast wind around 15 mph, with gusts as high as 30 mph.
Tonight
A slight chance of showers before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 50. North northeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 71. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Increasing clouds, with a low around 47. Northeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 70. Northeast wind around 5 mph becoming east southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 51. East wind around 5 mph.
Wednesday
Mostly sunny, with a high near 74. Calm wind becoming east southeast around 5 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 58. South southeast wind around 5 mph.
Thursday
Mostly cloudy, with a high near 80. Southeast wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Wimberley TX
 29.92°N 98.12°W (Elev. 1148 ft)
Last Update:
8:44 am CDT Apr 5, 2026
Forecast Valid:
10am CDT Apr 5, 2026-6pm CDT Apr 11, 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