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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

New Orleans, New Orleans International Airport (KMSY)

Lat: 29.99°NLon: 90.25°WElev: 3ft.

Thunderstorm Light Rain

78°F

26°C

Humidity 93%
Wind Speed SW 8 mph
Barometer 30.11 in (1019.9 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Aug 2:53 pm CDT
Extended Forecast for

Jefferson LA

Heat Advisory August 16, 10:00am until August 16, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a steady temperature around 89. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. West wind around 5 mph becoming calm.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 11am. Sunny, with a high near 94. Heat index values as high as 106. North wind around 5 mph.

    High: 94 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. Calm wind.

    Low: 79 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming northeast in the afternoon.

    High: 94 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.

    High: 92 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. East wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a steady temperature around 89. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. West wind around 5 mph becoming calm.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 11am. Sunny, with a high near 94. Heat index values as high as 106. North wind around 5 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming northeast in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 79. East wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming north around 5 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 78. South wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Northwest wind around 5 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 78. South wind around 5 mph becoming calm in the evening.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming west around 5 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jefferson LA
 29.97°N 90.14°W
Last Update:
1:57 pm CDT Aug 15, 2025
Forecast Valid:
3pm CDT Aug 15, 2025-6pm CDT Aug 22, 2025
 
Forecast Discussion
 
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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