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Laplace, Louisianna 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Laplace LA
National Weather Service Forecast for: Laplace LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 6:31 pm CDT Jul 12, 2025
 
Tonight

Tonight: Mostly clear, with a low around 76. Calm wind.
Mostly Clear

Sunday

Sunday: Showers and thunderstorms likely, mainly between 2pm and 5pm. Some of the storms could produce heavy rainfall.  Increasing clouds, with a high near 92. Calm wind becoming east around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Chance
T-storms then
Heavy Rain
Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 76. South wind around 5 mph becoming calm.
Chance
T-storms then
Mostly Clear
Monday

Monday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph.  Chance of precipitation is 60%.
Chance
T-storms then
T-storms
Likely
Monday
Night
Monday Night: A chance of thunderstorms before 7pm.  Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.
Chance
T-storms then
Clear
Tuesday

Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Sunny, with a high near 94. Northwest wind around 5 mph becoming calm  in the afternoon.  Chance of precipitation is 40%.
Chance
T-storms

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 77. Northwest wind around 5 mph.
Mostly Clear

Wednesday

Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming northeast in the afternoon.
Slight Chance
T-storms then
Chance
T-storms
Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 77. East wind around 5 mph becoming calm  in the evening.
Chance
T-storms

Lo 76 °F Hi 92 °F Lo 76 °F Hi 93 °F Lo 77 °F Hi 94 °F Lo 77 °F Hi 94 °F Lo 77 °F

 

Tonight
 
Mostly clear, with a low around 76. Calm wind.
Sunday
 
Showers and thunderstorms likely, mainly between 2pm and 5pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a high near 92. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
 
A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm.
Monday
 
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph. Chance of precipitation is 60%.
Monday Night
 
A chance of thunderstorms before 7pm. Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
 
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Sunny, with a high near 94. Northwest wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 40%.
Tuesday Night
 
Mostly clear, with a low around 77. Northwest wind around 5 mph.
Wednesday
 
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Northwest wind around 5 mph becoming northeast in the afternoon.
Wednesday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening.
Thursday
 
Showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 92. North wind around 5 mph becoming east in the afternoon.
Thursday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. East wind around 5 mph becoming calm in the evening.
Friday
 
Showers and thunderstorms. Partly sunny, with a high near 91. West wind around 5 mph becoming east in the afternoon.
Friday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Saturday
 
Showers and thunderstorms. Partly sunny, with a high near 92. Calm wind becoming southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Laplace LA.

Weather Forecast Discussion
230
FXUS64 KLIX 122024
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
324 PM CDT Sat Jul 12 2025

...New SHORT TERM, LONG TERM, AVIATION, MARINE...

.SHORT TERM...
(This evening through Sunday night)
Issued at 323 PM CDT Sat Jul 12 2025

Latest upper level analysis shows a ridge centerd over the Gulf,
another one near southern California and a trough across the north-
central US. The CWA is on the northwestern periperhy of the ridge, a
region of some subisdence but not a lot and certainly not enough to
inhibit summertime convection. As such, scattered showers and storms
have developed and will persist through the afternoon hours before
dissipating with daytime heating. Radar presentation over the last
few hours reflects what to expect this time of year with pop up
thunderstorms that weaken rather quickly once reaching mature stage.
Only the few most intense storms will present any apprecible threat
of damaging winds and frequent lightning.

A weak shortwave within the base of the trough will slightly weaken
the upper ridge nearby. This will allow for increased coverage of
storms on Sunday with those rain chances rising inot the 60 to 80%
range for western portoins of the CWA.

MEFFER
&&

.LONG TERM...
(Monday through Friday night)
Issued at 323 PM CDT Sat Jul 12 2025

The upper trough looks to progress east and lift northward starting
next week. This will allow the ridge nearby to spread back north
across the northern Gulf Coast. That will put us back into less
daytime convection and warmer temps. With forecast highs solidly in
the mid 90s Monday and Tuesday along with dewpoints in the mid to
upper 70s, it`s pretty much a given that a heat advisory will be
needed for those 2 days. It`s possible that this will carry over
into Wednesday but increasing rainfall coverage as we transition
from heat to wet.

Models show that the increasing mid week convective coverage will be
coming from the east as an inverted trough. It looks like quite deep
tropical moisture will a large envelope of 2.5"+ PW which is well
above the 90th percentile and actually right near peak values for
this time of year. Way to soon to determine if it`ll attain tropical
characteristics. Regardless, the local area would be in a fairly wet
pattern for a few to several days. Will need to monitor this one.

MEFFER
&&

.AVIATION...
(18Z TAFS)
Issued at 323 PM CDT Sat Jul 12 2025

VFR outside TSRA through this cycle. Main impacts will be short term
gusty winds and rainfall. TSRA will dissipate with loss of daytime
heating and then return with possibly greater coverage tomorrow. Did
add some PROB30 groups for those terminals.

&&

.MARINE...
Issued at 323 PM CDT Sat Jul 12 2025

Quiet marine conditions will continue through the next few days as
high pressure remains overhead or at least nearby. Winds generally
onshore at 10 knots or less with seas under 2 feet. The only
exception would be brief gale force wind gusts from isolated storms.
A broad area of low pressure moving into the northeaster Gulf middle
of next week my induce offshore flow in coastal waters east of the
Mouth of the Mississippi River.


MEFFER
&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  72  93  72  94 /  20  30   0  40
BTR  74  92  74  93 /  10  60   0  50
ASD  73  93  73  94 /  10  40   0  40
MSY  77  93  78  94 /  10  60   0  60
GPT  76  92  76  94 /  10  40  10  40
PQL  73  93  73  95 /  10  30  10  40

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&

$$

SHORT TERM...ME
LONG TERM....ME
AVIATION...ME
MARINE...ME
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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