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Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Hazardous Weather Conditions

Current conditions at

New Orleans, New Orleans International Airport (KMSY)

Lat: 29.99°NLon: 90.25°WElev: 3ft.

Thunderstorm

93°F

34°C

Humidity 56%
Wind Speed NE 6 mph
Barometer 29.96 in (1014.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 18 Aug 12:53 pm CDT
Extended Forecast for

Hahnville LA

Heat Advisory August 19, 10:00am until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 105. East wind around 5 mph.

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the morning.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny and hot, with a high near 95. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 40%.

    High: 95 °F

    Chance
    T-storms

  • Wednesday Night

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

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 94. Calm wind becoming northeast around 5 mph. Chance of precipitation is 50%.

    High: 94 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.

    Low: 77 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southeast around 5 mph.

    High: 93 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 105. East wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Calm wind becoming northeast around 5 mph in the morning.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny and hot, with a high near 95. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 94. Calm wind becoming northeast around 5 mph. Chance of precipitation is 50%.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.
Friday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southeast around 5 mph.
Friday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 77. Calm wind.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hahnville LA
 29.98°N 90.4°W
Last Update:
1:36 pm CDT Aug 18, 2025
Forecast Valid:
1pm CDT Aug 18, 2025-6pm CDT Aug 24, 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