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

Hammond, Hammond Municipal Airport (KHDC)

Lat: 30.52°NLon: 90.42°WElev: 43ft.

Light Rain

75°F

24°C

Humidity 99%
Wind Speed N 6 mph
Barometer 29.90 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 16 Jun 2:35 pm CDT
Extended Forecast for

4 Miles ESE Tangipahoa LA

Flood Watch June 16, 02:42pm until June 19, 07:00am
Flash Flood Warning June 16, 02:42pm until June 16, 04:45pm
Click here for hazard details and duration
Flood Watch
Flash Flood Warning
  •  
    Flood Watch June 16, 02:42pm until June 19, 07:00am
    Flash Flood Warning June 16, 02:42pm until June 16, 04:45pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 78 °F

    T-storms and
    Patchy Fog

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 4am. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 8am, then a chance of showers and thunderstorms after 8am. Patchy fog between 10am and 11am. Otherwise, partly sunny, with a high near 86. South wind 5 to 10 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: 86 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Some of the storms could produce heavy rainfall. Low around 75. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 75 °F

    Showers
    Likely then
    Heavy Rain

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. High near 86. South wind 10 to 15 mph. Chance of precipitation is 100%.

    High: 86 °F

    Heavy Rain
    then T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Low around 76. South wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 76 °F

    T-storms then
    Showers
    Likely

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm, then showers and thunderstorms after 1pm. High near 90. Southwest wind around 5 mph. Chance of precipitation is 80%.

    High: 90 °F

    Showers
    Likely then
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms likely, mainly between 4pm and 5pm. Patchy fog. High near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 4am. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 8am, then a chance of showers and thunderstorms after 8am. Patchy fog between 10am and 11am. Otherwise, partly sunny, with a high near 86. South wind 5 to 10 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.
Wednesday Night
Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Some of the storms could produce heavy rainfall. Low around 75. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. High near 86. South wind 10 to 15 mph. Chance of precipitation is 100%.
Thursday Night
Showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Low around 76. South wind 5 to 10 mph. Chance of precipitation is 80%.
Juneteenth
Showers likely and possibly a thunderstorm, then showers and thunderstorms after 1pm. High near 90. Southwest wind around 5 mph. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Calm wind.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Light south wind increasing to 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 75. South wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 94. Southwest wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Tangipahoa LA
 30.84°N 90.45°W
Last Update:
2:02 pm CDT Jun 16, 2026
Forecast Valid:
2pm CDT Jun 16, 2026-6pm CDT Jun 22, 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