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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Lafayette, Lafayette Regional Airport (KLFT)

Lat: 30.2°NLon: 91.99°WElev: 39ft.

Mostly Cloudy

78°F

26°C

Humidity 97%
Wind Speed Calm
Barometer 29.80 in (1009.1 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Jun 1:53 am CDT
Extended Forecast for

Port Barre LA

Flood Watch June 17, 02:16am until June 18, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 17, 02:16am until June 18, 07:00pm

    NOW until 7:00pm Thu

    Flood Watch

  • Overnight

    Low: 74 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 83. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 76. Southeast wind 15 to 20 mph becoming south 5 to 10 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 76 °F

    Heavy Rain

  • Thursday

    Thursday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. High near 89. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 89 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. South wind around 5 mph. Chance of precipitation is 70%.

    High: 92 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 77 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a low around 74. Southeast wind around 5 mph.
Wednesday
A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 83. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 76. Southeast wind 15 to 20 mph becoming south 5 to 10 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 11am, then a chance of showers and thunderstorms after 11am. Some of the storms could produce heavy rainfall. High near 89. Heat index values as high as 106. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday Night
Partly cloudy, with a low around 79. South wind 5 to 10 mph, with gusts as high as 20 mph.
Juneteenth
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 92. South wind around 5 mph. Chance of precipitation is 70%.
Friday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 77. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 77. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 78.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Barre LA
 30.56°N 91.96°W
Last Update:
1:41 am CDT Jun 17, 2026
Forecast Valid:
2am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation