Slidell, Louisiana Weather Conditions

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Current Conditions

  • 90°
  • Scattered Clouds
  • Wind: SSE 8 mph
  • Humidity: 59%
  • Visibility: 10.0 miles
  • Dew Point: 74°
  • Pressure: 29.99 in. -
  • Heat Index: 99

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Next 12 Hours

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4  am
Chance of a Thunderstorm
Chance of T-storms
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Chance of T-storms
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86°
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75°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 73 °
  • Chance of T-Storms
  • Wednesday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 73 °
  • Chance of T-Storms
  • Thursday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 73 °
  • Chance of T-Storms
  • Friday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 72 °
  • Chance of a Thunderstorm
  • Saturday
  • Partly Cloudy
  • High: 90 °
  • Low: 72 °
  • Partly Cloudy

Forecast for Slidell, Louisiana

Updated: 4:00 PM CDT on September 02, 2014

  • Tuesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F with a heat index of 97F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday Night

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. Fog overnight. Low of 73F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Fog overnight. Low of 73F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F with a heat index of 95F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then overcast with a chance of a thunderstorm and rain. Fog overnight. Low of 73F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Friday

    Partly cloudy with a chance of a thunderstorm and rain. High of 88F with a heat index of 93F. Winds from the East at 5 to 10 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm and rain. Fog overnight. Low of 72F. Winds less than 5 mph. Chance of rain 50%.

  • Saturday

    Partly cloudy. Fog early. High of 90F. Winds from the ENE at 5 to 10 mph shifting to the SE in the afternoon.

  • Saturday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 72F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy. High of 90F with a heat index of 95F. Winds less than 5 mph.

  • Sunday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 73F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.

  • Monday

    Clear. High of 90F with a heat index of 95F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 73F. Winds from the South at 5 to 10 mph.

  • Tuesday

    Clear. High of 90F. Winds from the NNE at 5 to 10 mph shifting to the SSE in the afternoon.

  • Tuesday Night

    Clear. Fog overnight. Low of 73F. Winds from the SSE at 5 to 10 mph.

  • Wednesday

    Clear. High of 88F. Winds from the ESE at 5 to 10 mph.

  • Wednesday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 73F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 88F. Winds from the East at 5 to 10 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy. Low of 73F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 88F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 75F. Winds less than 5 mph.

  • Saturday

    Clear. High of 86F. Winds from the ENE at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 75F. Winds from the East at 10 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Oak Harbor, K4QAL, Slidell, LA

Updated: 4:00 PM CDT

Temperature: 87.5 °F Dew Point: 76 °F Humidity: 68% Wind: SSW at 4.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 4:15 PM CDT

Temperature: 87.1 °F Dew Point: 77 °F Humidity: 71% Wind: SSE at 3.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Slidell, LA

Updated: 3:45 PM CDT

Temperature: 88.7 °F Dew Point: 78 °F Humidity: 71% Wind: SSE at 2.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 2:15 PM MST

Temperature: 85.5 °F Dew Point: 78 °F Humidity: 77% Wind: SSE at 7.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 4:11 PM CDT

Temperature: 84.5 °F Dew Point: 79 °F Humidity: 82% Wind: SE at 6.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 4:12 PM CDT

Temperature: 94.5 °F Dew Point: 81 °F Humidity: 66% Wind: Calm Pressure: 29.99 in Hourly Precipitation: - Heat Index: 117 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 4:14 PM CDT

Temperature: 91.0 °F Dew Point: 77 °F Humidity: 64% Wind: SSE at 1.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 105 °F Graphs

Location: Pearl Hickory, Pearl River, LA

Updated: 3:59 PM CDT

Temperature: 86.4 °F Dew Point: 77 °F Humidity: 73% Wind: SSW at 2.7 mph Pressure: 29.71 in Hourly Precipitation: - Heat Index: 97 °F Graphs

Location: Hickory, Pearl River, LA

Updated: 4:12 PM CDT

Temperature: 87.8 °F Dew Point: 79 °F Humidity: 75% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: RAWS SELA PORTABLE LA US, Lacombe, LA

Updated: 3:34 PM CDT

Temperature: 87 °F Dew Point: 74 °F Humidity: 66% Wind: SE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: RAWS BIG BRANCH NWR LA US, Lacombe, LA

Updated: 3:47 PM CDT

Temperature: 91 °F Dew Point: 76 °F Humidity: 61% Wind: SSW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Shoreline Park, Bay St. Louis, MS

Updated: 4:15 PM CDT

Temperature: 86.1 °F Dew Point: - Humidity: - Wind: SSE at 2.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: B and L's in Forest Glen, Lacombe, LA

Updated: 4:14 PM CDT

Temperature: 89.2 °F Dew Point: 76 °F Humidity: 65% Wind: West at 6.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 4:15 PM CDT

Temperature: 90.7 °F Dew Point: 72 °F Humidity: 55% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

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

Updated: 4:15 PM CDT

Temperature: 86.4 °F Dew Point: 73 °F Humidity: 65% Wind: South at 2.2 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 4:15 PM CDT

Temperature: 86.0 °F Dew Point: 77 °F Humidity: 74% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 4:06 PM CDT

Temperature: 88.2 °F Dew Point: 77 °F Humidity: 69% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Carriere, MS

Updated: 4:15 PM CDT

Temperature: 80.3 °F Dew Point: 75 °F Humidity: 85% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Diamondhead East, Diamondhead, MS

Updated: 4:12 PM CDT

Temperature: 85.5 °F Dew Point: 79 °F Humidity: 81% Wind: SW at 2.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Hide_A_Way Lake ~OWX, Carriere, MS

Updated: 4:15 PM CDT

Temperature: 82.0 °F Dew Point: 76 °F Humidity: 83% Wind: SE at 2.0 mph Pressure: 29.95 in Hourly Precipitation: 0.01 in Heat Index: 90 °F Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 4:07 PM CDT

Temperature: 93.2 °F Dew Point: 80 °F Humidity: 65% Wind: Calm Pressure: 29.98 in Hourly Precipitation: - Heat Index: 112 °F Graphs

Location: The Timbers, Mandeville, LA

Updated: 4:15 PM CDT

Temperature: 90.1 °F Dew Point: 75 °F Humidity: 62% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Woodlands, Mandeville, LA

Updated: 4:15 PM CDT

Temperature: 88.9 °F Dew Point: 75 °F Humidity: 64% Wind: SW at 2.5 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Deval Estates, Mandeville, LA

Updated: 4:15 PM CDT

Temperature: 92.8 °F Dew Point: 80 °F Humidity: 66% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 111 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 4:07 PM CDT

Temperature: 88.6 °F Dew Point: 77 °F Humidity: 69% Wind: South at 3.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Old Mandeville, Mandeville, LA

Updated: 4:04 PM CDT

Temperature: 91.2 °F Dew Point: 78 °F Humidity: 66% Wind: WSW at 3.2 mph Pressure: 29.84 in Hourly Precipitation: - Heat Index: 107 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 4:06 PM CDT

Temperature: 90.9 °F Dew Point: 77 °F Humidity: 63% Wind: SSW at 8.0 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: 104 °F Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 4:15 PM CDT

Temperature: 88.7 °F Dew Point: 77 °F Humidity: 69% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 102 °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 
414 PM CDT Tuesday Sep 2 2014 


Short term... 


A persistent upper level ridge will remain parked over the 
forecast area through Thursday. In the low to mid-levels...the 
ridge axis will be displaced to the east of the forecast area 
which will allow for deep layer onshore flow to continue. With 
strong onshore flow in place...a deep tropical airmass will linger 
over the area. Precipitable water values of 2.25 inches will be 
common...which combined with ample instability during the 
afternoon hours will allow for scattered shower and thunderstorm 
development. With weak forcing aloft in place...any convection 
will tend to form along low level mesoscale boundaries such as 
seabreeze fronts where convergence is maximized. The deepest 
convection could produce localized rain amounts of up to an 
inch given the high precipitation efficiency expected. 
Temperatures will be near seasonal norms through the short term 
period. 


Long term... 


The upper level ridge begin to break down a bit on Friday as a weak 
inverted trough moves into the eastern Gulf of Mexico. With a 
slight increase in Omega across the area...scattered convection 
will tend to develop earlier in the day and last later into the 
evening. The deep tropical moisture will continue over the 
area...so locally heavy rainfall of 1 to 2 inches will be 
possible with the strongest storms. The inverted trough axis will 
continue to move through the central Gulf Coast on 
Saturday...keeping scattered diurnally induced convection in 
place. This trough will finally shear out early next 
week...allowing the strong upper level ridge to build back over the 
area for Monday and Tuesday. Onshore flow will continue in the 
low levels...so low end chance probability of precipitation will be place each day. 
Temperatures will be little changed through the period...and will 
generally range near seasonal norms. 


&& 


Aviation... 


Latest surface observation show cloud decks right around the VFR/MVFR line. 
Scattered convection has developed with thunderstorms tracking from 
SW to NE. Most cells are short lived but can produce heavy rain 
leading to IFR visible at times. Otherwise...VFR conditions will prevail 
late this evening and overnight as showers and storms dissipate. Mcb 
and hum could see light fog near sunrise Wednesday but not expecting 
it to last too long. 


Meffer 


&& 


Marine... 


A persistent surface ridge extending across the eastern Gulf of 
Mexico will keep a southeast flow of around 10 knots in place 
through the period. Seas will be somewhat elevated at 2 to 4 feet over 
the western waters through tomorrow as a swell train of 1 to 2 
feet emanating from Tropical Storm Debby moves through the area. 
As the system moves into Mexico...the swell will diminish and 
expect to see a return to calmer seas of 1 to 2 feet by Friday. 


&& 


Decision support... 


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


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 to high risk severe 
and/or direct tropical threats; events of National 
significance. 




&& 


Preliminary point temps/pops... 
mcb 73 93 72 93 / 30 50 30 50 
btr 74 93 73 93 / 30 50 30 50 
asd 75 92 74 92 / 30 50 30 50 
msy 77 90 77 91 / 30 50 30 50 
gpt 76 92 75 91 / 30 50 30 50 
pql 74 93 73 92 / 30 50 30 30 


&& 


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


$$ 


32 



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