National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy to Excessive Rainfall for the Southwest; Thunderstorms in Florida with Flooding Possible

Tropical moisture from Priscilla will bring a multi-day thunderstorm, widespread heavy rainfall and flash flooding event across the Southwest/Four Corners region. Flash flooding will be a concern in burn scars, slot canyons, and urban areas. Widespread storms are expected in central/South Florida with some isolated flash flooding possible. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

79°F

26°C

Humidity 72%
Wind Speed N 8 mph
Barometer 30.23 in (1022.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 9 Oct 9:56 am CDT
Extended Forecast for

5 Miles W San Marcos TX

  • Today

    Today: Sunny, with a high near 92. East northeast wind around 10 mph, with gusts as high as 25 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northeast wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. East northeast wind around 5 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. South southeast wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. South southeast wind 5 to 10 mph.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 92. East northeast wind around 10 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 65. Northeast wind around 5 mph.
Friday
Sunny, with a high near 92. East northeast wind around 5 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 59. Southeast wind around 5 mph.
Sunday
Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 65. South southeast wind around 5 mph.
Columbus Day
Sunny, with a high near 92. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W San Marcos TX
 29.88°N 98.02°W (Elev. 797 ft)
Last Update:
6:42 am CDT Oct 9, 2025
Forecast Valid:
10am CDT Oct 9, 2025-6pm CDT Oct 15, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation