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.

Fair

N/A

Humidity NA
Wind Speed E 7 mph
Barometer 29.96 in
Dewpoint N/A
Visibility 10.00 mi
Last update 5 Sep 11:56 am CDT
Extended Forecast for

Belle River LA

  • This Afternoon

    This Afternoon: Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Steady temperature around 86. Calm wind becoming south around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    T-storms
    Likely then
    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Heat index values as high as 108. Calm wind becoming west around 5 mph.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Labor Day

    Labor Day: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Sunny, with a high near 93. Calm wind becoming northwest around 5 mph. Chance of precipitation is 70%.

    High: 93 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 91 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. Calm wind becoming east around 5 mph.

    High: 90 °F

    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Steady temperature around 86. Calm wind becoming south around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Heat index values as high as 108. Calm wind becoming west around 5 mph.
Sunday Night
Mostly clear, with a low around 76. Calm wind.
Labor Day
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Sunny, with a high near 93. Calm wind becoming northwest around 5 mph. Chance of precipitation is 70%.
Monday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. Calm wind becoming east around 5 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. Calm wind.
Thursday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 91. Calm wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Belle River LA
 29.91°N 91.19°W
Last Update:
2:01 am CDT Sep 5, 2026
Forecast Valid:
12pm CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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