Slidell, Louisiana Weather Conditions

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Current Conditions

  • 85°
  • Partly Cloudy
  • Wind: ESE 9 mph
  • Humidity: 74%
  • Visibility: 10.0 miles
  • Dew Point: 76°
  • Pressure: 29.99 in. 0
  • Heat Index: 94

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Next 12 Hours

1  pm
4  pm
7  pm
10  pm
1  am
Overcast
Overcast
Overcast
Overcast
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
84°
84°
82°
77°
76°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Overcast
  • High: 86 °
  • Low: 73 °
  • Overcast
  • Friday
  • Partly Cloudy
  • High: 89 °
  • Low: 74 °
  • Partly Cloudy
  • Saturday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 74 °
  • Chance of T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 72 °
  • Chance of T-Storms
  • Monday
  • Partly Cloudy
  • High: 87 °
  • Low: 72 °
  • Partly Cloudy

Forecast for Slidell, Louisiana

Updated: 4:09 am CDT on September 3, 2015

  • Today

    Mostly cloudy with a 50 percent chance of showers and thunderstorms. Highs around 90. Southeast winds to 10 mph.

  • Tonight

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s. Southeast winds to 10 mph.

  • Friday

    Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds to 10 mph.

  • Friday Night

    Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 70s. South winds 5 to 10 mph shifting to the west after midnight.

  • Saturday

    Partly cloudy. Slight chance of showers and thunderstorms in the morning...then chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Northeast winds to 5 mph shifting to the southeast in the afternoon. Chance of precipitation 30 percent.

  • Saturday Night

    Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 70s.

  • Sunday

    Partly cloudy. Slight chance of showers and thunderstorms in the morning...then chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 30 percent.

  • Sunday Night through Tuesday Night

    Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s.

  • Wednesday

    Partly cloudy. Slight chance of showers and thunderstorms in the morning...then chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of precipitation 40 percent.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Breckenridge, Slidell, LA

Updated: 2:07 PM CDT

Temperature: 82.6 °F Dew Point: 72 °F Humidity: 71% Wind: SE at 4.2 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Michigan Ave. The Roy's, Slidell, LA

Updated: 2:07 PM CDT

Temperature: 83.7 °F Dew Point: 77 °F Humidity: 80% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

Location: W5DGM, Slidell, LA

Updated: 1:53 PM CDT

Temperature: 83.7 °F Dew Point: 76 °F Humidity: 78% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Hunters Creek Road, Slidell, LA

Updated: 2:05 PM CDT

Temperature: 82.8 °F Dew Point: 76 °F Humidity: 81% Wind: North at - Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Oak Harbor, K4QAL, Slidell, LA

Updated: 2:07 PM CDT

Temperature: 82.3 °F Dew Point: 75 °F Humidity: 79% Wind: SE at 4.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 2:07 PM CDT

Temperature: 80.6 °F Dew Point: 74 °F Humidity: 80% Wind: SSE at 7.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Eden Isles, Slidell, LA

Updated: 3:07 PM EDT

Temperature: 82.7 °F Dew Point: 76 °F Humidity: 81% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.01 in Heat Index: 91 °F Graphs

Location: Slidell, LA

Updated: 1:55 PM CDT

Temperature: 83.1 °F Dew Point: 77 °F Humidity: 81% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 12:07 PM MST

Temperature: 80.7 °F Dew Point: 76 °F Humidity: 85% Wind: SSE at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 1:55 PM CDT

Temperature: 79.8 °F Dew Point: 76 °F Humidity: 88% Wind: SE at 8.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: APRSWXNET, Slidell, LA

Updated: 1:42 PM CDT

Temperature: 82 °F Dew Point: 72 °F Humidity: 71% Wind: SE at 1 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 2:00 PM CDT

Temperature: 85.8 °F Dew Point: 78 °F Humidity: 77% Wind: ESE at 2.2 mph Pressure: 29.91 in Hourly Precipitation: - Heat Index: 98 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 2:07 PM CDT

Temperature: 85.5 °F Dew Point: 77 °F Humidity: 76% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: Hickory, Pearl River, LA

Updated: 2:05 PM CDT

Temperature: 84.1 °F Dew Point: 76 °F Humidity: 76% Wind: NE at 1.6 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

Location: The Mason Farm, Waveland, MS

Updated: 1:42 PM CDT

Temperature: 85.8 °F Dew Point: 74 °F Humidity: 68% Wind: SW at 5.4 mph Pressure: 29.92 in Hourly Precipitation: - Heat Index: 94 °F Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 2:07 PM CDT

Temperature: 87.3 °F Dew Point: 60 °F Humidity: 40% Wind: SSW at 1.6 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Sadie's Weather on Jeff Davis, Waveland, MS

Updated: 2:07 PM CDT

Temperature: 85.1 °F Dew Point: 67 °F Humidity: 54% Wind: East at 3.8 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 2:07 PM CDT

Temperature: 82.6 °F Dew Point: 74 °F Humidity: 74% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 1:56 PM CDT

Temperature: 85.1 °F Dew Point: 77 °F Humidity: 76% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Heat Index: 95 °F Graphs

Location: M/V Microship, Bay St. Louis, MS

Updated: 2:05 PM CDT

Temperature: 83.1 °F Dew Point: 74 °F Humidity: 75% Wind: South at 6.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Round Rock, Picayune, MS

Updated: 2:00 PM CDT

Temperature: 77.4 °F Dew Point: 75 °F Humidity: 93% Wind: SSW at 3.7 mph Pressure: 29.73 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Carriere, MS

Updated: 2:07 PM CDT

Temperature: 75.8 °F Dew Point: 75 °F Humidity: 98% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.09 in Heat Index: 75 °F Graphs

Location: APRSWXNET, Diamondhead, MS

Updated: 1:45 PM CDT

Temperature: 83 °F Dew Point: 75 °F Humidity: 78% Wind: SW at 2 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Diamondhead East, Diamondhead, MS

Updated: 2:00 PM CDT

Temperature: 82.8 °F Dew Point: 75 °F Humidity: 78% Wind: WSW at 2.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: North Hill Drive, Carriere, MS

Updated: 2:05 PM CDT

Temperature: 78.6 °F Dew Point: 74 °F Humidity: 84% Wind: North at - Pressure: 29.85 in Hourly Precipitation: 0.11 in Heat Index: 82 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 2:01 PM CDT

Temperature: 83.3 °F Dew Point: 74 °F Humidity: 74% Wind: Calm Pressure: 29.99 in Hourly Precipitation: - Heat Index: 90 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service New Orleans la 
400 am CDT Thursday Sep 3 2015 


Short term... 


A persistent upper level trough will continue to linger over the 
central Gulf Coast today and tomorrow. With this trough axis 
lingering over the area...increased upper level forcing and a high 
Theta-E airmass will keep increased cloud cover and higher than 
average rain chances over the area through tomorrow. Expect to see 
shower and thunderstorm activity along the Louisiana coast this 
morning. This activity will spread inland through the morning 
hours...and have 50 to 60 percent chance probability of precipitation in place for areas 
along and south of the Interstate 10/12 corridor where precipitable water values 
and overall moisture profiles are more supportive of convective 
development. Over the northern third of the forecast 
area...slightly lower Theta-E and precipitable water values will keep probability of precipitation in the 
30 to 50 percent range during peak heating hours. Temperatures 
will be fairly close to seasonal norms in the upper 80s and lower 
90s today. 


The convective activity will quickly turn more isolated as 
daytime heating wanes...and expect to see mainly dry weather over 
most inland areas by late evening. However...scattered shower and 
thunderstorm activity will persist in the Gulf waters through the 
night. With dewpoints still in the lower 70s...overnight lows will 
only cool into the middle to upper 70s over much of the region. 
Overall...a warm and muggy night can be expected. The trough axis 
and moisture axis looks to be oriented a bit more to the south and 
east tomorrow...and have confined the highest probability of precipitation to coastal 
areas of Mississippi and Louisiana. Farther inland...probability of precipitation will be 
in the low end chance range due to slightly less lift aloft and 
lower precipitable water values of around 1.9 inches compared to the 2.1 inches 
noted along the coast. Temperatures will remain seasonably warm in 
the upper 80s and lower 90s during the afternoon hours. 


Increasing negative vorticity advection will take hold of the area 
Friday night and Saturday as the upper level trough axis shifts 
further to the east...and a broad area of middle and upper level 
ridging over the Southern Plains expands eastward. With increased 
subsidence aloft...overall convective coverage will be more 
suppressed and precipitable water values will fall back to more seasonal norms 
around 1.8 inches. The area not be completely devoid of 
convection...and have low end chance probability of precipitation of around 30 percent in 
place for the peak heating hours in the afternoon. Any convection 
will quickly dissipate after sunset...and have mainly dry 
conditions in place for Saturday night. Only extreme coastal areas 
and the offshore waters will continue to have a low chance of 
convection through the night. Temperatures will warm back into the 
lower to middle 90s on Saturday due to the increased subsidence 
aloft...drier airmass...and less convective coverage. 


Long term... 


Both the Euro and the GFS indicate that the broad area of middle and 
upper level ridging will continue to dominate the Gulf south on 
Sunday...and keep low probability of precipitation of 30 percent or less in place. Probability of precipitation 
should be highest along the coast and just inland due to the 
possibility of a weak seabreeze front forming and providing a 
focus for convection. Temperatures will remain slightly above 
normal in the lower to middle 90s. 


The Euro and GFS are also both in good agreement that an upper 
level low over the middle-Atlantic will retrograde to the southwest 
and become centered over the east-central Gulf Coast on Monday. 
This feature will linger just to the east of the forecast area 
through Wednesday...and expect to see the vast majority of the 
unsettled weather remain parked over Florida and Georgia where 
the deeper moisture axis will reside. Southeast Louisiana and 
southern Mississippi will remain on the drier and more stable 
side of the upper level trough. As a result...expect to see 
continued below normal rain chances in the 20 to 30 percent range 
through the middle of the week. Convection will continue to be 
diurnal in nature...with the highest probability of precipitation in the afternoon 
hours...and very low rain chances during the overnight and early 
morning hours. Temperatures will remain slightly above average in 
the lower 90s and overnight lows will remain stuck in the lower to 
middle 70s due to continued high dewpoints in the lower 70s. 


The trough will once again retrograde more toward the forecast 
area on Thursday as it drawn towards another developing area of 
low pressure and associated cold front over the plains states. 
With the trough axis becoming more centered over the area on 
Thursday...rain chances will increase due to the increase in 
overall vorticity aloft and a higher Theta-E airmass moving in 
from the east. Have bumped up probability of precipitation to around 40 to 50 percent for 
Thursday. Temperatures will also fall back to more seasonal norms 
in the upper 80s and lower 90s. 


&& 


Aviation... 


Anticipate VFR conditions for the majority of the period. Most sites 
should experience IFR conditions with ts around today. Will show 
this as mainly thunderstorms in the vicinity for most terminals and give mainly coastal sites 
tempo groups with ts since chances will be high enough in these 
areas. 


&& 


Marine... 


A deep tropical moisture axis will remain over the Gulf 
from near the Yucatan northward to the north central Gulf Coast. 
This weakness will keep higher chances of ts activity in the coastal 
waters through the forecast. Winds and seas will be higher near 
scattered ts. Wind gusts could be as high as 30 knots with the 
strongest activity. Outside ts activity conditions will remain 
rather benign with a weak pressure gradient. Nocturnal activity will 
be the most abundant while there will be a general decrease in 
activity during the late morning through late afternoon hours. 


&& 


Decision support... 


Dss code....green. 
Deployed...none. 
Activation...none. 
Activities...none. 


Decision support services (dss) code legend 
green = no weather impacts that require action 
blue = long fused watch/warning/advisory in effect or high 
visibility event 
yellow = heightened impacts with short fused watch/warning/advisory 
issuances; radar support 
Orange = high impacts - slight to moderate risk severe; nearby 
tropical events; hazmat or other large episodes 
red = full engagement for moderate risk severe and/or direct 
tropical threats; events of National significance 




&& 


Preliminary point temps/pops... 
mcb 91 71 92 72 / 30 30 30 10 
btr 90 73 91 73 / 40 30 30 10 
asd 89 74 90 74 / 50 20 40 20 
msy 88 77 89 76 / 50 30 40 20 
gpt 89 77 89 76 / 50 30 40 30 
pql 89 74 90 74 / 50 30 40 30 


&& 


Lix watches/warnings/advisories... 
la...none. 
GM...none. 
MS...none. 
GM...none. 
&& 


$$ 


32 






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