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

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.77 in (1007.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 May 3:56 am CDT
Extended Forecast for

San Marcos TX

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 89. West wind 5 to 10 mph becoming northeast in the afternoon.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. East wind around 5 mph becoming southwest after midnight.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 90. Southwest wind 5 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 85. South southeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 85 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

    Low: 69 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. North wind 5 to 10 mph.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 90. West wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 89. West wind 5 to 10 mph becoming northeast in the afternoon.
Tonight
Mostly clear, with a low around 65. East wind around 5 mph becoming southwest after midnight.
Wednesday
Mostly sunny, with a high near 90. Southwest wind 5 to 15 mph becoming south southeast in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 85. South southeast wind 5 to 10 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 67. North wind 5 to 10 mph.
Saturday
Sunny, with a high near 90. West wind 5 to 10 mph becoming east southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos TX
 29.88°N 97.94°W (Elev. 577 ft)
Last Update:
3:42 am CDT May 14, 2024
Forecast Valid:
4am CDT May 14, 2024-6pm CDT May 20, 2024
 
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