Slidell, Louisiana Weather Conditions

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Current Conditions

  • 78°
  • Clear
  • Wind: Calm
  • Humidity: 90%
  • Visibility: 10.0 miles
  • Dew Point: 75°
  • Pressure: 30.01 in. +

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Next 12 Hours

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

5 Day Forecast

  • Saturday
  • Thunderstorm
  • High: 88 °
  • Low: 73 °
  • T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 75 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 75 °
  • Chance of T-Storms
  • Tuesday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 73 °
  • Chance of a Thunderstorm
  • Wednesday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 73 °
  • Chance of a Thunderstorm

Forecast for Slidell, Louisiana

Updated: 4:00 AM CDT on August 30, 2014

  • Saturday

    Mostly cloudy with thunderstorms and rain showers. High of 88F. Winds from the SSE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Saturday Night

    Overcast with a chance of a thunderstorm and a chance of rain. Fog overnight. Low of 73F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

  • Sunday

    Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F with a heat index of 102F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Sunday Night

    Partly cloudy in the evening, then overcast. Fog overnight. Low of 75F. Winds from the SSE at 5 to 10 mph.

  • Monday

    Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F with a heat index of 99F. Winds from the SE at 5 to 10 mph. Chance of rain 30%.

  • Monday Night

    Partly cloudy. Fog overnight. Low of 75F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm and rain in the afternoon. Fog early. High of 91F with a heat index of 97F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm and rain after midnight. Fog overnight. Low of 73F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday

    Overcast with a chance of a thunderstorm and rain in the morning, then mostly cloudy. High of 91F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy. Low of 73F. Winds from the SE at 5 to 10 mph.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Thursday Night

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

  • Friday

    Mostly cloudy. High of 90F. Winds from the ESE at 5 to 10 mph.

  • Friday Night

    Clear. Fog overnight. Low of 72F. Winds from the ESE at 5 to 10 mph.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 90F. Winds from the East at 5 to 10 mph. Chance of rain 30%.

  • Saturday Night

    Clear. Fog overnight. Low of 72F. Winds from the ESE at 5 to 10 mph.

  • Sunday

    Clear with a chance of a thunderstorm. High of 90F. Winds from the East at 5 to 10 mph. Chance of rain 40%.

  • Sunday Night

    Clear. Low of 73F. Winds less than 5 mph.

  • Monday

    Clear. High of 91F. Winds from the East at 5 to 10 mph.

  • Monday Night

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

  • Tuesday

    Clear with a chance of a thunderstorm. High of 91F. Winds from the East at 5 to 10 mph. Chance of rain 40%.

  • Tuesday Night

    Clear. Low of 73F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 5:14 AM CDT

Temperature: 78.2 °F Dew Point: 77 °F Humidity: 97% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Slidell, LA

Updated: 5:09 AM CDT

Temperature: 78.2 °F Dew Point: 77 °F Humidity: 97% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Oak Harbor, K4QAL, Slidell, LA

Updated: 5:05 AM CDT

Temperature: 81.1 °F Dew Point: 76 °F Humidity: 86% Wind: SSE at 3.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 5:14 AM CDT

Temperature: 81.7 °F Dew Point: 77 °F Humidity: 86% Wind: SE at 6.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Timber Ridge, Slidell, LA

Updated: 5:14 AM CDT

Temperature: 78.2 °F Dew Point: 74 °F Humidity: 88% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 5:12 AM CDT

Temperature: 76.7 °F Dew Point: 74 °F Humidity: 92% Wind: Calm Pressure: 30.00 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 3:13 AM MST

Temperature: 81.5 °F Dew Point: 78 °F Humidity: 89% Wind: SSE at 11.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 5:12 AM CDT

Temperature: 78.1 °F Dew Point: 75 °F Humidity: 91% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 5:05 AM CDT

Temperature: 81.5 °F Dew Point: 78 °F Humidity: 89% Wind: SE at 13.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: RAWS SELA PORTABLE LA US, Lacombe, LA

Updated: 4:34 AM CDT

Temperature: 81 °F Dew Point: 77 °F Humidity: 87% Wind: ESE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Oak Mill, Lacombe, LA

Updated: 5:14 AM CDT

Temperature: 75.9 °F Dew Point: 76 °F Humidity: 99% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Pearl Hickory, Pearl River, LA

Updated: 5:04 AM CDT

Temperature: 74.5 °F Dew Point: 74 °F Humidity: 97% Wind: Calm Pressure: 29.75 in Hourly Precipitation: - Heat Index: 72 °F Graphs

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

Updated: 4:47 AM CDT

Temperature: 78 °F Dew Point: 76 °F Humidity: 93% Wind: SE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Hickory, Pearl River, LA

Updated: 5:13 AM CDT

Temperature: 76.0 °F Dew Point: 74 °F Humidity: 94% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 5:07 AM CDT

Temperature: 76.8 °F Dew Point: 76 °F Humidity: 98% Wind: Calm Pressure: 30.01 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: The Timbers, Mandeville, LA

Updated: 5:10 AM CDT

Temperature: 77.7 °F Dew Point: 76 °F Humidity: 95% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Soult Street/Molitor Street, Mandeville, LA

Updated: 5:14 AM CDT

Temperature: 76.8 °F Dew Point: 77 °F Humidity: 100% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Woodlands, Mandeville, LA

Updated: 5:13 AM CDT

Temperature: 76.8 °F Dew Point: 76 °F Humidity: 98% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Deval Estates, Mandeville, LA

Updated: 5:13 AM CDT

Temperature: 75.6 °F Dew Point: 75 °F Humidity: 99% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Old Mandeville, Mandeville, LA

Updated: 5:06 AM CDT

Temperature: 77.0 °F Dew Point: 76 °F Humidity: 97% Wind: East at 2.2 mph Pressure: 29.84 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 5:14 AM CDT

Temperature: 74.5 °F Dew Point: 73 °F Humidity: 95% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 5:06 AM CDT

Temperature: 74.8 °F Dew Point: 74 °F Humidity: 98% Wind: Calm Pressure: 29.98 in Hourly Precipitation: - Heat Index: 72 °F Graphs

Location: Carriere, MS

Updated: 5:14 AM CDT

Temperature: 75.1 °F Dew Point: 75 °F Humidity: 99% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Pittari Lane, Carriere, MS

Updated: 5:01 AM CDT

Temperature: 73.8 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.72 in Hourly Precipitation: - Heat Index: - Graphs

Location: Chateau Village Subdivision, Mandeville, LA

Updated: 5:14 AM CDT

Temperature: 80.2 °F Dew Point: 77 °F Humidity: 91% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Covington / Abita Springs, Covington, LA

Updated: 5:14 AM CDT

Temperature: 74.1 °F Dew Point: 74 °F Humidity: 98% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Shoreline Park, Bay St. Louis, MS

Updated: 5:14 AM CDT

Temperature: 80.9 °F Dew Point: - Humidity: - Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hide_A_Way Lake ~OWX, Carriere, MS

Updated: 5:13 AM CDT

Temperature: 74.8 °F Dew Point: 73 °F Humidity: 94% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Estates of Northpark, Covington, LA

Updated: 5:13 AM CDT

Temperature: 75.1 °F Dew Point: 74 °F Humidity: 97% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 5:14 AM CDT

Temperature: 81.9 °F Dew Point: 76 °F Humidity: 82% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

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

Updated: 5:14 AM CDT

Temperature: 81.7 °F Dew Point: 73 °F Humidity: 75% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 5:14 AM CDT

Temperature: 78.1 °F Dew Point: 78 °F Humidity: 99% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 5:01 AM CDT

Temperature: 77.5 °F Dew Point: 76 °F Humidity: 95% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Heat Index: 79 °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 
351 am CDT Sat Aug 30 2014 


Synopsis... 


Upper vorticity maximum appears to be over extreme southwest Louisiana 
early this morning...lifting north-northeastward around the 
western periphery of an upper ridge centered over the Carolinas. 
Most of the rain and isolated thunderstorms with this system are 
occurring to the west of our County Warning Area early this morning. There is some 
activity well out into the Gulf south of Plaquemines Parish...but 
most of the area is not seeing much in the way of precipitation as 
of 3 am. Temperatures range from the middle 70s west to lower 80s 
over portions of the Mississippi coast. 


&& 


Short term... 


Airmass remains extremely moist with precipitable water values 
near or above 2.25 inches across most of the area this morning. 
Trough moving across the northern plains and Great Lakes will 
continue to pull upper impulse north-northeast into the Ohio 
Valley today. This should keep the heaviest rain generally to the 
west of the Atchafalaya River. That being said...still expecting 
development of numerous showers and scattered thunderstorms across 
our area during the daylight hours with the emphasis to the west 
of Interstate 55. Localized rain amounts of 2 inches or more are 
certainly possible with some of the thunderstorms...but rainfall 
totals on Friday were under one half inch across most of the area. 
Do not plan on a Flash Flood Watch at this time. There is at least 
a small threat of a wet microburst or two this afternoon. Lowered 
probability of precipitation for today slightly...but still categorical over western 
sections. 


High moisture levels will remain...but with the loss of organized 
lift with the departure of the upper vorticity...convective development 
on Sunday and Labor Day will be back to the more usual diurnally 
driven convective pattern. 


Additional cloud cover should hold temperatures below 90 degrees 
over the area today...but should return to slightly above normal 
levels for Sunday and Monday. 35 


&& 


Long term... 


Upper ridging re-establishes across the northern Gulf Coast for 
much of the week. Expect convection to be mainly afternoon and 
early evening with isolated to low end scattered areal coverage. 
GFS indicates a bit of a weakness in the ridge at midweek while 
the European model (ecmwf) keeps the ridge intact. For now...have sided with the 
GFS for midweek with a mention of precipitation where the European model (ecmwf) 
would have Wednesday dry. Expect temperatures to be a category or 
so above normal for much of the extended forecast period. 35 


&& 


Aviation... 


Mostly light rain showers may be in the vicinity of an Airport or two 
prior to 12z along with some tempo MVFR due to ceilings. Rain chances 
will be high after 12z today...especially in the late morning and 
afternoon hours...and kbtr...kmcb...khum and khdc could experience 
multiple occurrences of shra/tsra. Tonight is expected to have 
much less coverage of shra/tsra...so no mention will be included in 
the tafs after 00z. MVFR to VFR conditions will generally prevail 
outside of rain areas...possibly trending toward more widespread 
MVFR late tonight/early Sunday morning due to patchy fog and low 
ceilings. 22/dew point 


&& 


Marine... 


The combination of an inverted trough in the far west/northwest Gulf 
of Mexico and high pressure to the east is resulting in moderate 
southeast winds across the central Gulf Coast coastal waters. Near 
surface winds west of the Mississippi River are likely sustained 15 
to 20 knots...and that is expected to continue this morning before 
the gradient relaxes slightly this afternoon. There is enough fetch 
and duration of stronger southeast winds to bring seas up to 6 feet 
over the southwest marine zone gmz570 by late morning and 
afternoon...so will have a /small craft exercise caution/ headline 
in effect there through 7 PM today. The remaining coastal marine 
zones west of Southwest Pass will have the caution headline this 
morning for winds with seas expected to peak in the 4 to 5 feet 
range. Slightly better boating conditions are expected east and 
northeast of the Mississippi River passes today. All areas could 
experience a period or two of stronger wind gusts and locally higher 
seas in scattered to numerous showers and thunderstorms today. 


With the ridge still in place...southeast winds of 10 to 15 knots 
will be the rule from tonight through Wednesday...possibly peaking 
slightly over 15 knots at times Sunday night west of Southwest 
Pass. Seas will generally range from 3 to 5 feet...perhaps a bit 
higher over the far west Sunday night...and on the lower end on 
Wednesday. 22/dew point 


&& 


Decision support... 


Dss code...green. 
Deployed...none. 
Activation...none. 
Activities...slurry support. Monitoring radar trends. 


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 86 74 90 74 / 100 30 30 10 
btr 86 75 92 76 / 100 30 30 10 
asd 88 75 91 77 / 70 30 30 10 
msy 88 78 91 79 / 80 30 30 10 
gpt 88 77 90 79 / 60 30 20 10 
pql 89 75 90 77 / 60 30 30 10 


&& 


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


$$ 














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