Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Partly Cloudy

81°F

27°C

Humidity 84%
Wind Speed S 7 mph
Barometer 29.94 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 21 Jun 4:15 am CDT
Extended Forecast for

15 Miles SW Grand Isle LA

  • Today

    Today: Partly sunny, with a high near 88. South wind 10 to 15 mph.

    High: 88 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 85. South wind 10 to 15 mph.

    Low: 85 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89. South wind around 10 mph.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 82. South wind around 10 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Southwest wind 5 to 10 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 81. Southwest wind 5 to 10 mph.

    Low: 81 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. West wind 5 to 10 mph.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 81. Southwest wind 5 to 10 mph.

    Low: 81 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 88. South wind 10 to 15 mph.
Tonight
Mostly cloudy, with a steady temperature around 85. South wind 10 to 15 mph.
Monday
Mostly sunny, with a high near 89. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 82. South wind around 10 mph.
Tuesday
Sunny, with a high near 89. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 81. Southwest wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 89. West wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 81. Southwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 81. Southwest wind around 5 mph.
Friday
Sunny, with a high near 89. South wind around 5 mph.
Friday Night
Mostly clear, with a low around 82. South wind 5 to 10 mph.
Saturday
Sunny, with a high near 89. South wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SW Grand Isle LA
 29.1°N 90.2°W
2:02 am CDT Jun 21, 2026
4am CDT Jun 21, 2026-6pm CDT Jun 27, 2026
 
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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