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

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 >

Hazardous Weather Conditions

Current conditions at

New Roads False River Regional Airport (KHZR)

Lat: 30.72°NLon: 91.48°WElev: 39ft.

Light Rain

77°F

25°C

Humidity 100%
Wind Speed S 12 mph
Barometer 29.71 in
Dewpoint 77°F (25°C)
Visibility 8.00 mi
Heat Index78°F (26°C)
Last update 18 Jun 12:15 am CDT
Extended Forecast for

Maringouin LA

Flood Watch June 18, 12:26am until June 19, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 18, 12:26am until June 19, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Overnight

    Low: 75 °F

    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 2pm. Partly sunny, with a high near 89. Heat index values as high as 108. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. South wind 5 to 15 mph.

    Low: 79 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms before 4pm, then a chance of thunderstorms after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 109. South wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

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

    Low: 77 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 77. South wind 5 to 10 mph.

    Low: 77 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 91. South wind 5 to 15 mph.

    High: 91 °F

    Mostly Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 75. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 2pm. Partly sunny, with a high near 89. Heat index values as high as 108. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Partly cloudy, with a low around 79. South wind 5 to 15 mph.
Juneteenth
A chance of showers and thunderstorms before 4pm, then a chance of thunderstorms after 5pm. Mostly sunny, with a high near 92. Heat index values as high as 109. South wind 5 to 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 77. South wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 77. South wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 91. South wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 77. South wind 10 to 15 mph.
Monday
Sunny, with a high near 93. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maringouin LA
 30.51°N 91.52°W
Last Update:
11:41 pm CDT Jun 17, 2026
Forecast Valid:
12am CDT Jun 18, 2026-6pm CDT Jun 24, 2026
 
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