National Weather Service Forecast for: Gretna LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 11:15 am CDT Jul 10, 2026
 
Today

Today: Showers and thunderstorms likely, mainly between 3pm and 4pm. Partly sunny, with a high near 92. Heat index values as high as 106. South wind around 5 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely

 Tonight

Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 80. South wind around 5 mph becoming calm in the evening.
Slight Chance
T-storms then
Mostly Clear
 Saturday

Saturday: Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly sunny, with a high near 91. Heat index values as high as 106. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Slight Chance
T-storms then
T-storms
Likely
 Saturday
Night
Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. South wind around 5 mph becoming calm in the evening.
Slight Chance
T-storms

 Sunday

Sunday: Showers and thunderstorms, mainly after 1pm. High near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 90%.
Chance
T-storms then
T-storms
 Sunday
Night
Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 78. South wind around 5 mph becoming calm in the evening.
Chance
T-storms

 Monday

Monday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 87. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 90%.
T-storms

 Monday
Night
Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm in the evening.
Chance
T-storms

 Tuesday

Tuesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 86. West wind around 5 mph.
T-storms
Likely
Hi 92 °F Lo 80 °F Hi 91 °F Lo 79 °F Hi 90 °F Lo 78 °F Hi 87 °F Lo 75 °F Hi 86 °F

 

Today
 
 Showers and thunderstorms likely, mainly between 3pm and 4pm. Partly sunny, with a high near 92. Heat index values as high as 106. South wind around 5 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 80. South wind around 5 mph becoming calm in the evening.
Saturday
 
 Showers and thunderstorms likely, mainly between 2pm and 4pm. Mostly sunny, with a high near 91. Heat index values as high as 106. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. South wind around 5 mph becoming calm in the evening.
Sunday
 
 Showers and thunderstorms, mainly after 1pm. High near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 90%.
Sunday Night
 
 A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 78. South wind around 5 mph becoming calm in the evening.
Monday
 
 Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 87. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 90%.
Monday Night
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm in the evening.
Tuesday
 
 Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 86. West wind around 5 mph.
Tuesday Night
 
 A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Northwest wind around 5 mph.
Wednesday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 78. Southwest wind around 5 mph becoming calm.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Northwest wind around 5 mph.

 

Forecast from NOAA-NWS for Gretna LA.