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Prairieville, Louisianna 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Prairieville LA
National Weather Service Forecast for: Prairieville LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 12:26 am CDT Aug 18, 2025
 
Today

Today: A 50 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming northeast around 5 mph.  New rainfall amounts between a quarter and half of an inch possible.
Sunny then
Chance
T-storms
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 76. Calm wind.
Slight Chance
T-storms then
Partly Cloudy
Tuesday

Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming northeast around 5 mph.
Sunny then
Chance
T-storms
Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms before 10pm.  Mostly clear, with a low around 75. Calm wind.
Slight Chance
T-storms then
Mostly Clear
Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Sunny and hot, with a high near 96. Calm wind.
Sunny then
Chance
T-storms
Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Mostly clear, with a low around 76. Calm wind.  Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
Thursday

Thursday: Showers and thunderstorms likely after 1pm.  Mostly sunny and hot, with a high near 95. Calm wind.  Chance of precipitation is 60%.
Sunny then
T-storms
Likely
Thursday
Night
Thursday Night: A 30 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 76. Calm wind.
Chance
T-storms

Friday

Friday: Showers and thunderstorms likely, mainly after 1pm.  Mostly sunny, with a high near 91. Calm wind.
T-storms
Likely

Hi 97 °F Lo 76 °F Hi 95 °F Lo 75 °F Hi 96 °F Lo 76 °F Hi 95 °F Lo 76 °F Hi 91 °F

 

Today
 
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming northeast around 5 mph. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 76. Calm wind.
Tuesday
 
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming northeast around 5 mph.
Tuesday Night
 
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 75. Calm wind.
Wednesday
 
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 96. Calm wind.
Wednesday Night
 
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 76. Calm wind. Chance of precipitation is 30%.
Thursday
 
Showers and thunderstorms likely after 1pm. Mostly sunny and hot, with a high near 95. Calm wind. Chance of precipitation is 60%.
Thursday Night
 
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. Calm wind.
Friday
 
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind.
Friday Night
 
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 75. Calm wind.
Saturday
 
Showers and thunderstorms likely. Partly sunny, with a high near 91. Calm wind.
Saturday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.
Sunday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming northeast around 5 mph.

 

Forecast from NOAA-NWS for Prairieville LA.

Weather Forecast Discussion
258
FXUS64 KLIX 180415
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
1115 PM CDT Sun Aug 17 2025

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

.SHORT TERM...
(Today through Wednesday Night)
Issued at 1051 PM CDT Sun Aug 17 2025

Persistence is the name of the game through the short term period
as a broad upper level ridge axis centered over Texas and southern
Plains continues to dominate the Gulf South. A pool of drier air
in the mid-levels feeding on the back of a deep northerly flow
regime will keep rain chances a bit lower and temperatures a bit
warmer through Wednesday. The drier air is easily reflected by
near to slightly below average PWATS for this time of year. The
main impact will be a delayed convective initiation time frame
with most of the thunderstorm activity not firing up until the mid
to late afternoon hours each day. This will allow highs to quickly
climb into the mid to upper 90s each afternoon. Fortunately, just
enough dry air should mix down into the boundary layer to push
dewpoints into the low to mid 70s by the afternoon hours when the
hottest temperatures occur. This should keep heat index values
generally between 105 and 108 or just below heat advisory levels.
A heat advisory has not been issued for Monday, but anyone working
outside should take their proper heat precautions including
drinking plenty of water and taking breaks in the shade or
indoors.

Rain chances will generally range from 30 to 40 percent each day
with the highest chances in the late afternoon hours. Fortunately,
severe storms are not anticipated, but a few stronger storms
producing winds of around 40 mph and heavy downpours could
develop. Storm motion will be relatively slow at 10 mph or less,
so heavier rainfall could produce some localized street flooding
in poorly drained areas. Overall, though, the thunderstorm
activity expected is pretty typical for this time of year in terms
of intensity and coverage.

&&

.LONG TERM...
(Thursday through Sunday Night)
Issued at 1051 PM CDT Sun Aug 17 2025

All of the guidance continues to be in good agreement that the
ridge will retreat to the west as a broad trough forms across the
eastern third of the CONUS. Hurricane Erin off the eastern
seaboard will assist in driving this trough a bit further south
from Friday through the weekend. An associated weak frontal
boundary will also slip into the area, and could stall over the
region by the weekend. The biggest impact from this trough and
boundary over the area will be a substantial increase in deep
layer moisture and higher rain chances each day. PWATS will surge
to between the 75th and 90th percentile, or between 1.9 and 2.1
inches, over this period. This moisture will tap into the broad
area of increased forcing aloft along the trough axis to produce
more numerous showers and thunderstorms each day. The thunderstorm
activity will also start earlier in the morning as the convective
temperature falls into the upper 80s. The end result will be a
cooler and rainier pattern for the latter half of the workweek
and into the weekend. Storm motion will remain slow and rainfall
processes will be very efficient, so some localized flooding in
low lying and poorly drained areas will be a growing concern by
the weekend. There may also be a few convective complexes that
slide down from the Arklatex region over this period, so that will
need to monitored for additional flooding concerns.

&&

.AVIATION...
(06Z TAFS)
Issued at 1051 PM CDT Sun Aug 17 2025

Prevailing VFR conditions will be the rule at all of the
terminals through the forecast period. However, another round of
widely scattered storms could form generally after 18z as
temperatures climb back into the mid to upper 90s. This convective
threat for the afternoon hours is reflected by additional PROB30
wording at most of the terminals. PG

&&

.MARINE...
Issued at 1051 PM CDT Sun Aug 17 2025

The Summer doldrums continue across the coastal waters as light
winds of less than 10 knots and seas of around 1 foot persist
through the end of the week. Thunderstorm chances will be lower
than average through Wednesday as some drier air and more
northerly winds persist, but higher thunderstorm chances take
hold to close out the week. Outside of the locally higher winds
and waves associated with any thunderstorms that form, there are
no significant impacts to maritime activities expected through the
end of the week.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  74  96  73  96 /  20  30  20  30
BTR  75  96  75  95 /  20  50  30  40
ASD  75  95  74  95 /  20  30  10  30
MSY  80  94  79  93 /  20  40  20  40
GPT  77  92  76  92 /  20  20  10  30
PQL  75  93  75  92 /  10  20  10  30

&&

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

$$

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






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