National Weather Service Forecast for: Chalmette LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 6:45 pm CDT Aug 25, 2026
 
Tonight

Tonight: Mostly clear, with a low around 80. Southwest wind around 5 mph becoming calm.
Mostly Clear

 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 107. West wind around 5 mph becoming south in the afternoon.
Sunny then
Chance
T-storms
 Wednesday
Night
Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 4am. Partly cloudy, with a low around 80. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Slight Chance
T-storms then
Chance
Showers
 Thursday

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 91. Heat index values as high as 105. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 80%.
Showers
Likely then
T-storms
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. South wind around 5 mph becoming calm. Chance of precipitation is 70%.
Showers
Likely

 Friday

Friday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 90. Northwest wind around 5 mph. Chance of precipitation is 70%.
Showers
Likely then
T-storms
Likely
 Friday
Night
Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Calm wind.
Chance
T-storms

 Saturday

Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.
Chance
T-storms

 Saturday
Night
Saturday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm.
Partly Cloudy
then Slight
Chance
T-storms
Lo 80 °F Hi 94 °F Lo 80 °F Hi 91 °F Lo 78 °F Hi 90 °F Lo 78 °F Hi 92 °F Lo 79 °F

 

Tonight
 
 Mostly clear, with a low around 80. Southwest wind around 5 mph becoming calm.
Wednesday
 
 A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Heat index values as high as 107. West wind around 5 mph becoming south in the afternoon.
Wednesday Night
 
 A slight chance of showers and thunderstorms, then a chance of showers after 4am. Partly cloudy, with a low around 80. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 91. Heat index values as high as 105. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 80%.
Thursday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. South wind around 5 mph becoming calm. Chance of precipitation is 70%.
Friday
 
 Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 90. Northwest wind around 5 mph. Chance of precipitation is 70%.
Friday Night
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Calm wind.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph in the morning.
Saturday Night
 
 A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm.
Sunday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light and variable wind becoming east 5 to 10 mph in the morning.
Sunday Night
 
 Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm in the evening.
Monday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the morning.
Monday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 79. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming east around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Chalmette LA.