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Hammond, Louisianna 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Hammond LA
National Weather Service Forecast for: Hammond LA
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 12:26 am CDT Jul 10, 2025
 
Today

Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 91. Calm wind becoming west around 5 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Showers
Likely
Tonight

Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm.  Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.
Chance
Showers then
Partly Cloudy
Friday

Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 92. Heat index values as high as 106. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Showers
Friday
Night
Friday Night: Showers, mainly before 7pm.  Low around 74. South wind around 5 mph becoming calm.  Chance of precipitation is 80%.
Showers then
Mostly Clear

Saturday

Saturday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon.  Chance of precipitation is 50%.
Sunny then
Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 10pm.  Partly cloudy, with a low around 75. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
Sunday

Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm.  Mostly sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon.  Chance of precipitation is 60%.
Slight Chance
Showers then
Showers
Likely
Sunday
Night
Sunday Night: Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm  in the evening.
Partly Cloudy

Monday

Monday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm.  Mostly sunny and hot, with a high near 96. Calm wind becoming southwest around 5 mph in the afternoon.
Showers
Likely

Hi 91 °F Lo 74 °F Hi 92 °F Lo 74 °F Hi 94 °F Lo 75 °F Hi 95 °F Lo 76 °F Hi 96 °F

 

Today
 
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 92. Heat index values as high as 106. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
Showers, mainly before 7pm. Low around 74. South wind around 5 mph becoming calm. Chance of precipitation is 80%.
Saturday
 
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 50%.
Saturday Night
 
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 10pm. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
 
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny and hot, with a high near 95. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
 
Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Monday
 
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny and hot, with a high near 96. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm.
Tuesday
 
Showers likely and possibly a thunderstorm. Mostly sunny and hot, with a high near 96. Calm wind becoming northwest around 5 mph.
Tuesday Night
 
A slight chance of showers. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm.
Wednesday
 
Showers likely and possibly a thunderstorm. Mostly sunny and hot, with a high near 97. Calm wind becoming northwest around 5 mph.

 

Forecast from NOAA-NWS for Hammond LA.

Weather Forecast Discussion
814
FXUS64 KLIX 100555
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
1255 AM CDT Thu Jul 10 2025

...New AVIATION...

.SHORT TERM...
(Thursday through Saturday Night)
Issued at 1033 PM CDT Wed Jul 9 2025

A weak trough extending from the Northeastern CONUS into the Deep
South will continue to bring higher than average rain chances to
the forecast area through Friday. A pool of deeper moisture
associated with this weak trough axis will keep precipitable water
values between the 75th and 90th percentiles, or around 2 inches,
through Friday. This deep and plentiful moisture will combine with
ample instability as temperatures climb into the lower 90s to
produce scattered to numerous showers and thunderstorms each day.
Thunderstorm activity will generally form along the
seabreeze/lakebreeze initially and then spread outward on outflow
boundaries from decaying storms through the afternoon and early
evening hours. The increased omega aloft associated with the
trough will help the updrafts to maintain themselves longer than
in a typical Summer pulse thunderstorm situation, and this could
lead to some localized spots receiving higher rainfall totals than
typically seen on a July day. However, only isolated street
flooding in poorly drained and highly urbanized areas is the
primary concern with any storms that form both on Thursday and
Friday. Given the highly diurnal nature of the convection, largely
dry conditions are expected from mid to late evening into the
early overnight hours.

By Saturday, the weak trough is expected to fully dissipate and
stronger upper level ridging will begin to build in from the east.
As this ridge builds in, increasing deep layer subsidence will
lead to both warming and drying in the mid and upper levels. The
end result will be a reduction in overall instability as a weak
mid-level capping inversion forms. Precipitable water values will
also begin to drop with readings closer to average on Saturday, or
around 1.8 inches. Thunderstorm activity will tend to start later
in the day and be more scattered than observed on Thursday and
Friday. The drier air aloft could also more easily entrain into
the deeper updrafts, and this could lead to a few more wet
microburst events Saturday afternoon. This is supported by
downdraft CAPE values of around 1200 J/KG. These values are
significantly higher than those expected on Thursday and Friday.
The convection will also die off more quickly with largely dry
conditions expected by the early evening hours. Temperatures will
be slightly warmer due to the combination of less cloud
development and the subsidence aloft. Highs will warm more into
the low to mid 90s and heat index readings will be closer to 105
instead of 100.

&&

.LONG TERM...
(Sunday through Wednesday night)
Issued at 1033 PM CDT Wed Jul 9 2025

The upper level ridge will continue to build over the region on
Sunday and is expected to remain in place through Wednesday. The
increased subsidence aloft will keep precipitable water values
close to the median for this time of year, or between 1.7 and 1.8
inches, and this will result in lower convective coverage each
day. Shower and thunderstorm activity will be more scattered and
short-lived due to the lack of any deep layer forcing mechanisms
to support sustained updrafts. Unfortunately, the drier air aloft
will also continue to entrain into the deepest updrafts, and the
potential for wet microbursts will remain higher than average. The
thunderstorms will be diurnally induced with convection peaking
in the afternoon hours as the seabreeze/lakebreeze intensifies and
serves as a focusing mechanism for convective development.
Temperatures will also be above normal with most locations
climbing into the mid 90s each day. Although rain chances will be
lower and dry air will be in place aloft, surface dewpoints will
remain high in the mid to upper 70s through the period. As a
result, oppressive heat will be a concern starting on Sunday and
continuing through the end of next week. Heat index values are
highly probable to exceed heat advisory criteria of 108 degrees
each day. On average, maximum heat indices should range between
108 and 112 through the long term period.

&&

.AVIATION...
(06Z TAFS)
Issued at 1250 AM CDT Thu Jul 10 2025

Overnight hours will generally be VFR. With precipitable water
values near 2 inches, expect scattered to numerous SHRA and
scattered TSRA. Activity could start as early as 15z or so, but
should primarily be between 17z-23z. For much of that period, will
use prevailing SHRA and PROB30 TSRA. Beyond 00z Friday, will go
VFR for now through end of package Friday.

&&

.MARINE...
Issued at 1033 PM CDT Wed Jul 9 2025

Outside of the threat of thunderstorms capable of producing
waterspouts, gusty winds, higher waves, and lightning, conditions
across the coastal waters will remain relatively benign. A broad
ridge over the Gulf will keep winds from the south and southwest
at 10 knots or less through the period and seas will remain 2 feet
or less in the open Gulf waters. In the nearshore waters and
lakes, the seabreeze cycle will lead to more variable wind
directions with a light northerly flow of less than 10 knots in
the early morning hours shifting to a stronger southerly flow of
10 to 15 knots in the late morning and afternoon hours each day.
Thunderstorms will tend to form along the landbreeze boundaries in
the early morning hours and then linger into the late morning
before shifting inland.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  90  71  91  72 /  70  20  80  40
BTR  90  75  92  74 /  70  20  80  40
ASD  91  74  92  74 /  70  20  80  50
MSY  92  77  92  78 /  60  20  80  40
GPT  91  75  91  76 /  60  40  80  50
PQL  92  74  91  74 /  50  40  80  50

&&

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

$$

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






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