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.

Mostly Cloudy and Breezy

85°F

29°C

Humidity 72%
Wind Speed S 21 mph
Barometer 29.77 in (1007.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 6 May 2:56 pm CDT
Extended Forecast for

San Marcos TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 4pm. Partly sunny, with a high near 85. South wind around 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 72. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Southwest wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 90 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 72. South southeast wind around 10 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Southeast wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. North northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Partly sunny, with a high near 85. South wind around 15 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 72. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Southwest wind 5 to 10 mph becoming south southeast in the afternoon.
Tuesday Night
Increasing clouds, with a low around 72. South southeast wind around 10 mph.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 71. South southeast wind 5 to 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Southeast wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 66. North northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 79. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Partly sunny, with a high near 80.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
2:44 pm CDT May 6, 2024
Forecast Valid:
3pm CDT May 6, 2024-6pm CDT May 12, 2024
 
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