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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Louisiana Regional Airport (KREG)

Lat: 30.17°NLon: 90.94°WElev: 14ft.

Rain

79°F

26°C

Humidity 90%
Wind Speed SE 3 mph
Barometer 29.76 in
Dewpoint 76°F (24°C)
Visibility 5.00 mi
Heat Index83°F (28°C)
Last update 17 Jun 6:35 pm CDT
Extended Forecast for

Prairieville LA

Flood Watch June 17, 06:42pm until June 19, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 17, 06:42pm until June 19, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 76 °F

    Heavy Rain

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms after 9am. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 90. Heat index values as high as 106. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.

    High: 90 °F

    Heavy Rain
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Partly cloudy, with a low around 79. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    Showers then
    Partly Cloudy

  • Juneteenth

    Juneteenth: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 111. South wind around 5 mph. Chance of precipitation is 40%.

    High: 93 °F

    Slight Chance
    Showers 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 78. Calm wind. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

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

    Low: 77 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 92. South wind 5 to 10 mph.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Some of the storms could produce heavy rainfall. Low around 76. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between 3 and 4 inches possible.
Thursday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms after 9am. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 90. Heat index values as high as 106. Southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Partly cloudy, with a low around 79. South wind around 5 mph. Chance of precipitation is 30%.
Juneteenth
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 111. South wind around 5 mph. Chance of precipitation is 40%.
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 78. Calm wind. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 92. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 78. South wind around 5 mph.
Monday
Sunny, with a high near 94. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 77. Calm wind.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Prairieville LA
 30.31°N 90.97°W
Last Update:
2:03 pm CDT Jun 17, 2026
Forecast Valid:
6pm CDT Jun 17, 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