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.

Partly Cloudy

66°F

19°C

Humidity 84%
Wind Speed S 10 mph
Barometer 30.10 in (1018.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 10 Feb 12:56 pm CST
Extended Forecast for

5 Miles WSW Martindale TX

  • This Afternoon

    This Afternoon: Cloudy, with a high near 75. South wind around 10 mph.

    High: 75 °F

    Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before midnight. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58. South southeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. North wind 5 to 10 mph.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 80. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Cloudy, with a high near 75. South wind around 10 mph.
Tonight
A 30 percent chance of showers, mainly before midnight. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 60. South wind around 5 mph.
Friday
Mostly cloudy, with a high near 81. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Partly sunny, with a high near 80. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 75.
Sunday Night
Clear, with a low around 46.
Washington's Birthday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Martindale TX
 29.81°N 97.91°W (Elev. 581 ft)
Last Update:
12:45 pm CST Feb 10, 2026
Forecast Valid:
1pm CST Feb 10, 2026-6pm CST Feb 16, 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