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

82°F

28°C

Humidity 56%
Wind Speed S 16 mph
Barometer 29.85 in (1010.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 6 Mar 1:56 pm CST
Extended Forecast for

Martindale TX

  • This Afternoon

    This Afternoon: A slight chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 84. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 84. South southeast wind 10 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 55. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 55 °F

    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 70. North northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 82. Light southeast wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after midnight. Cloudy, with a low around 66. South southeast wind around 10 mph.

    Low: 66 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 83. South wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 84. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
Increasing clouds, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 84. South southeast wind 10 to 15 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 55. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 70. North northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.
Monday
A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 82. Light southeast wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of showers and thunderstorms after midnight. Cloudy, with a low around 66. South southeast wind around 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 83. South wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Showers and thunderstorms likely, mainly after midnight. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Martindale TX
 29.84°N 97.83°W (Elev. 502 ft)
Last Update:
1:44 pm CST Mar 6, 2026
Forecast Valid:
2pm CST Mar 6, 2026-6pm CDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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