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

94°F

34°C

Humidity 52%
Wind Speed S 14 G 21 mph
Barometer 29.96 in (1013.3 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 14 Oct 1:56 pm CDT
Extended Forecast for

Maxwell TX

  • This Afternoon

    This Afternoon: A slight chance of showers, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 101. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 93 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 90. South southeast wind 5 to 10 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. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.

    High: 73 °F

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.

    Low: 50 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 70. North 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 5 to 10 mph becoming light north.

    Low: 48 °F

    Mostly Clear

  • Sunday

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

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 101. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tonight
A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 90. South southeast wind 5 to 10 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. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Friday Night
Partly cloudy, with a low around 50. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Saturday
Sunny, with a high near 70. North wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 48. North northeast wind 5 to 10 mph becoming light north.
Sunday
Sunny, with a high near 75. Northeast wind around 5 mph.
Sunday Night
Mostly clear, with a low around 52.
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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maxwell TX
 29.88°N 97.83°W (Elev. 571 ft)
Last Update:
1:48 pm CDT Oct 14, 2026
Forecast Valid:
2pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation