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

79°F

26°C

Humidity 82%
Wind Speed S 18 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 14 Oct 11:56 pm CDT
Extended Forecast for

Martindale TX

  • Overnight

    Overnight: Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 90. South southeast wind around 5 mph.

    High: 90 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 4am. Partly cloudy, with a low around 64. East southeast wind around 5 mph becoming calm.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 7am. Partly sunny, with a high near 73. Windy, with a north wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 73 °F

    Chance
    Showers and
    Breezy then
    Partly Sunny
    and Windy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.

    Low: 51 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 70. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 70 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. North northeast wind around 5 mph becoming calm.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Northeast wind around 5 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 90. South southeast wind around 5 mph.
Thursday Night
A 30 percent chance of showers, mainly after 4am. Partly cloudy, with a low around 64. East southeast wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers before 7am. Partly sunny, with a high near 73. Windy, with a north wind 20 to 30 mph, with gusts as high as 40 mph.
Friday Night
Partly cloudy, with a low around 51. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Saturday
Sunny, with a high near 70. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 48. North northeast wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 75. Northeast wind around 5 mph.
Sunday Night
Mostly clear, with a low around 52. Calm wind.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 83.
Tuesday Night
Mostly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Martindale TX
 29.84°N 97.83°W (Elev. 502 ft)
Last Update:
11:33 pm CDT Oct 14, 2026
Forecast Valid:
12am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation