Gretna, Louisianna 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Gretna LA
National Weather Service Forecast for:
Gretna LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA |
Updated: 3:51 pm CDT Mar 30, 2025 |
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Tonight
 Mostly Cloudy then Slight Chance T-storms
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Monday
 Heavy Rain
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Monday Night
 Partly Cloudy
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Tuesday
 Partly Sunny
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Tuesday Night
 Mostly Cloudy
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Wednesday
 Partly Sunny and Breezy
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Wednesday Night
 Mostly Cloudy
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Thursday
 Mostly Sunny and Breezy
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Thursday Night
 Mostly Cloudy
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Lo 69 °F |
Hi 83 °F |
Lo 67 °F |
Hi 82 °F |
Lo 72 °F |
Hi 83 °F |
Lo 73 °F |
Hi 85 °F |
Lo 73 °F |
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Tonight
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A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 5 to 10 mph. |
Monday
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Showers and thunderstorms likely, mainly before 2pm. Some of the storms could produce heavy rainfall. Cloudy through mid morning, then gradual clearing, with a high near 83. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible. |
Monday Night
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Partly cloudy, with a low around 67. West wind around 5 mph becoming northeast after midnight. |
Tuesday
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Partly sunny, with a high near 82. East wind 5 to 10 mph becoming south in the afternoon. |
Tuesday Night
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Mostly cloudy, with a low around 72. South wind around 10 mph, with gusts as high as 25 mph. |
Wednesday
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Partly sunny, with a high near 83. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. |
Wednesday Night
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Mostly cloudy, with a low around 73. South wind around 15 mph, with gusts as high as 30 mph. |
Thursday
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Mostly sunny, with a high near 85. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. |
Thursday Night
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Mostly cloudy, with a low around 73. Southeast wind 10 to 15 mph. |
Friday
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Partly sunny, with a high near 85. Southeast wind 10 to 15 mph. |
Friday Night
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Mostly cloudy, with a low around 72. Southeast wind around 10 mph. |
Saturday
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A slight chance of showers. Partly sunny, with a high near 84. South wind 10 to 15 mph. |
Saturday Night
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A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind 5 to 10 mph. |
Sunday
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A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 5 to 15 mph. |
Forecast from NOAA-NWS
for Gretna LA.
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Weather Forecast Discussion
702
FXUS64 KLIX 302103
AFDLIX
Area Forecast Discussion
National Weather Service New Orleans LA
403 PM CDT Sun Mar 30 2025
...New SHORT TERM, LONG TERM, MARINE...
.SHORT TERM...
(This evening through Monday night)
Issued at 350 PM CDT Sun Mar 30 2025
Multiple impulses moving eastward along the northern Gulf Coast
are producing scattered convection this afternoon with most of the
activity in our area occurring along the Mississippi coast and
over our eastern coastal waters. The airmass is very moist and
unstable with temperatures in the lower and middle 80s outside of
where storms are occurring, while dew points are generally in the
lower 70s. With precipitable water values near 1.7 inches (at the
upper end climatologically for late March), storms have been very
efficient precipitation producers with a few locations already
seeing 1.5 to 2.5 inches of rain along the Mississippi coast.
Once the storms along the Mississippi coast move out in the next
few hours, our attention will turn to the west. A shortwave will
move out of the Rockies across the southern Plains States late
tonight and Monday morning. A line of thunderstorms is expected to
develop just in advance of the associated cold front. These storms
could potentially reach our southwest Mississippi counties and
southeast Louisiana parishes northwest of Baton Rouge just before
sunrise. Storms will move eastward, and should be out of most of
the area by early afternoon, although some of the convection
allowing modeling indicates potential to linger along the
Louisiana far lower coastal parishes. Moisture, instability and
shear will all be more than sufficient for severe storms to
develop, with all modes of severe weather possible. Most of the
CWA will be in a Slight Risk of severe weather on Monday, with an
Enhanced Risk over portions of Jackson County Mississippi, where
surface heating during the morning may help enhance instability.
The frontal boundary should slide offshore Monday night, allowing
slightly drier air to move into the area.
&&
.LONG TERM...
(Tuesday through Saturday night)
Issued at 350 PM CDT Sun Mar 30 2025
A large scale trough will move through the Plains States Tuesday
night and Wednesday, but at this time, it appears that any impacts
will be to the north of our area. With upper and surface ridging
over the Bahamas, upper flow will become southwesterly at midweek,
with multiple shortwaves moving from west Texas toward the Great
Lakes through the end of the work week. A frontal boundary will
eventually sag into the area next weekend, with the ECMWF
operational run being a little quicker to do it than the GFS
operational. Can`t rule out a few stray showers by Wednesday or
Thursday, but any significant areas of precipitation should remain
out of the area until at least Friday, and more likely over the
weekend. At those time scales, will just run with the NBM PoPs
for now.
One thing for sure, it`s going to be very warm. Some guidance is
indicating potential for 90 degree highs at several locations
Wednesday through Friday, which is roughly 2 weeks ahead of when
most record high temperatures hit 90 degrees. Normal highs are mid
70s this week.
&&
.AVIATION...
(18Z TAFS)
Issued at 1117 AM CDT Sun Mar 30 2025
MVFR conditions prevail at all area aiports. A frontal system will
be moving through the area overnight tonight into the daytime
hours tomorrow, which will lower ceilings and visibilties. The
flight category should remain MVFR with brief drops to IFR as a
result. Gusty winds will also be expected as the system moves
through the area. MSW
&&
.MARINE...
Issued at 350 PM CDT Sun Mar 30 2025
Main concern over the next 24 hours will be convection related,
with winds generally remaining below 15 knots outside of storms.
On the larger scale, winds and seas are likely to move into
hazardous ranges as early as Tuesday night, with advisories
probably necessary from that point into at least Thursday.
&&
.PRELIMINARY POINT TEMPS/POPS...
MCB 67 83 60 83 / 60 90 10 20
BTR 69 85 64 85 / 60 80 10 10
ASD 68 84 64 84 / 20 80 10 10
MSY 70 84 67 83 / 20 80 0 10
GPT 66 80 63 78 / 10 80 10 10
PQL 66 80 61 82 / 10 80 10 10
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&
$$
SHORT TERM...MSW/RW
LONG TERM....MSW/RW
AVIATION...MSW
MARINE...MSW/RW
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