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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

80°F

27°C

Humidity 80%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Aug 3:15 am CDT
Extended Forecast for

Larose LA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly clear, with a low around 77. Northeast wind around 5 mph.

    Low: 77 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 3pm. Partly sunny, with a high near 89. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly between 3am and 4am. Partly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 89. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 80%.

    High: 89 °F

    T-storms

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 88 °F

    T-storms

  • Tuesday Night

    Tuesday Night: Thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms. High near 89. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 89 °F

    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly clear, with a low around 77. Northeast wind around 5 mph.
Sunday
Showers and thunderstorms likely, mainly before 3pm. Partly sunny, with a high near 89. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly between 3am and 4am. Partly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening.
Monday
Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 89. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Tuesday
Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.
Tuesday Night
Thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms. High near 89. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%.
Wednesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 93. Calm wind becoming east around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Larose LA
 29.57°N 90.37°W
Last Update:
12:26 am CDT Aug 10, 2025
Forecast Valid:
3am CDT Aug 10, 2025-6pm CDT Aug 16, 2025
 
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