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

Patterson Memorial (KPTN)

Lat: 29.72°NLon: 91.33°WElev: 10ft.

Thunderstorm in Vicinity

86°F

30°C

Humidity 77%
Wind Speed S 12 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 17 Jun 11:56 am CDT
Extended Forecast for

Bayou Vista LA

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly between 4pm and 5pm. Partly sunny, with a high near 88. Heat index values as high as 99. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 90. Heat index values as high as 100. South wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Light south wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 91 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 91. Light east wind becoming south 5 to 10 mph in the afternoon.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly between 4pm and 5pm. Partly sunny, with a high near 88. Heat index values as high as 99. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 90. Heat index values as high as 100. South wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Juneteenth
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Light south wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 91. Light east wind becoming south 5 to 10 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Monday
Showers and thunderstorms. High near 92. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
Bayou Vista LA
 29.68°N 91.28°W
Last Update:
12:11 pm CDT Jun 17, 2025
Forecast Valid:
12pm CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation