Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Patterson Memorial (KPTN)

Lat: 29.72°NLon: 91.33°WElev: 10ft.

Mostly Cloudy

80°F

27°C

Humidity 94%
Wind Speed Vrbl 3 mph
Barometer 29.75 in (1007.4 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Jun 6:56 pm CDT
Extended Forecast for

2 Miles ESE Morgan City LA

Tropical Storm Warning until further notice
Flood Watch June 17, 09:53pm until June 18, 07:00pm
Click here for hazard details and duration
Tropical Storm Warning until further notice
Flood Watch
  •  
    Tropical Storm Warning until further notice
    Flood Watch June 17, 09:53pm until June 18, 07:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 78 °F

    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before noon.  Mostly sunny, with a high near 89. Heat index values as high as 110. Southwest wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 80. South wind around 10 mph.

    Low: 80 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 91. Heat index values as high as 109. South wind 5 to 10 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 79. South wind around 5 mph.

    Low: 79 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.

    High: 90 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 79. South wind around 5 mph.

    Low: 79 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89. South wind 5 to 10 mph.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely before 11pm, then showers and possibly a thunderstorm between 11pm and 3am, then showers and thunderstorms likely after 3am. Low around 78. South wind 10 to 15 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Thursday
Showers and thunderstorms likely, mainly before noon. Mostly sunny, with a high near 89. Heat index values as high as 110. Southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 80. South wind around 10 mph.
Juneteenth
Mostly sunny, with a high near 91. Heat index values as high as 109. South wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 79. South wind around 5 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 79. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 89. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 79. South wind around 10 mph.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 79.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Morgan City LA
 29.68°N 91.15°W
6:45 pm CDT Jun 17, 2026
9pm CDT Jun 17, 2026-6pm CDT Jun 24, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database