Slidell, Louisiana Weather Conditions

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Current Conditions

  • 76°
  • Mostly Cloudy
  • Wind: SE 7 mph
  • Humidity: 94%
  • Visibility: 10.0 miles
  • Dew Point: 74°
  • Pressure: 29.85 in. -

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Next 12 Hours

12  am
3  am
6  am
9  am
12  pm
Partly Cloudy
Partly Cloudy
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
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74°
73°
73°
76°
81°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of a Thunderstorm
  • High: 83 °
  • Low: 72 °
  • Chance of T-Storms
  • Sunday
  • Thunderstorm
  • High: 82 °
  • Low: 70 °
  • T-Storms
  • Monday
  • Thunderstorm
  • High: 81 °
  • Low: 69 °
  • T-Storms
  • Tuesday
  • Thunderstorm
  • High: 80 °
  • Low: 64 °
  • T-Storms
  • Wednesday
  • Chance of Rain
  • High: 81 °
  • Low: 60 °
  • Chance of Rain

Forecast for Slidell, Louisiana

Updated: 10:27 PM CDT on April 29, 2016

  • Tonight

    Mostly clear late in the evening then becoming mostly cloudy. Lows around 70. Southeast winds 5 to 15 mph.

  • Saturday

    Mostly cloudy. Slight chance of showers in the morning...then chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds 10 to 15 mph. Chance of precipitation 50 percent.

  • Saturday Night

    Cloudy with a 50 percent chance of showers and thunderstorms. Lows around 70. South winds 5 to 15 mph.

  • Sunday

    Cloudy with showers and thunderstorms likely. Highs in the lower 80s. South winds 5 to 10 mph. Chance of precipitation 70 percent.

  • Sunday Night

    Mostly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the upper 60s. Southeast winds to 10 mph.

  • Monday

    Partly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the lower 80s.

  • Monday Night

    Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows in the mid 60s.

  • Tuesday

    Cloudy. Showers and thunderstorms likely in the morning...then chance of showers and slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of precipitation 60 percent.

  • Tuesday Night

    Partly cloudy with chance of showers and slight chance of thunderstorms. Lows around 60. Chance of precipitation 30 percent.

  • Wednesday

    Partly cloudy. Highs in the upper 70s.

  • Wednesday Night

    Mostly clear. Lows around 60.

  • Thursday

    Sunny. Highs around 80.

  • Thursday Night

    Mostly clear. Lows in the upper 50s.

  • Friday

    Sunny. Highs in the lower 80s.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 12:11 AM CDT

Temperature: 75.3 °F Dew Point: 73 °F Humidity: 94% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Tanglewood, Slidell, LA

Updated: 12:11 AM CDT

Temperature: 75.7 °F Dew Point: 74 °F Humidity: 94% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Brookwood Estate, Slidell, LA

Updated: 12:05 AM CDT

Temperature: 74.8 °F Dew Point: 73 °F Humidity: 94% Wind: ESE at 1.7 mph Pressure: 29.59 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: W5DGM, Slidell, LA

Updated: 12:07 AM CDT

Temperature: 76.2 °F Dew Point: 74 °F Humidity: 92% Wind: SE at 5.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Slidell, LA

Updated: 12:10 AM CDT

Temperature: 75.7 °F Dew Point: 74 °F Humidity: 95% Wind: ESE at 2.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Breckenridge, Slidell, LA

Updated: 12:11 AM CDT

Temperature: 77.0 °F Dew Point: 67 °F Humidity: 72% Wind: SE at 5.1 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 12:11 AM CDT

Temperature: 75.4 °F Dew Point: 73 °F Humidity: 93% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.01 in Heat Index: 74 °F Graphs

Location: Eden Isles, Slidell, LA

Updated: 1:01 AM EDT

Temperature: 76.2 °F Dew Point: 74 °F Humidity: 93% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Hunters Creek Road, Slidell, LA

Updated: 12:11 AM CDT

Temperature: 75.0 °F Dew Point: 73 °F Humidity: 93% Wind: North at - Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: The Landings, Slidell, LA

Updated: 11:59 PM CDT

Temperature: 73.9 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.63 in Hourly Precipitation: - Heat Index: - Graphs

Location: Timber Ridge, Slidell, LA

Updated: 12:10 AM CDT

Temperature: 75.8 °F Dew Point: 60 °F Humidity: 57% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 12:09 AM CDT

Temperature: 73.2 °F Dew Point: 71 °F Humidity: 93% Wind: Calm Pressure: 29.77 in Hourly Precipitation: - Heat Index: 70 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 12:10 AM CDT

Temperature: 75.8 °F Dew Point: 72 °F Humidity: 87% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 12:10 AM CDT

Temperature: 76.1 °F Dew Point: 74 °F Humidity: 93% Wind: ESE at 18.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Charwood Drive, Pearl River, LA

Updated: 12:10 AM CDT

Temperature: 73.4 °F Dew Point: 73 °F Humidity: 98% Wind: North at - Pressure: 29.84 in Hourly Precipitation: - Heat Index: - Graphs

Location: Pearl River Town, Pearl River, LA

Updated: 11:56 PM CDT

Temperature: 73.2 °F Dew Point: 70 °F Humidity: 90% Wind: Calm Pressure: 29.67 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Oak Mill, Lacombe, LA

Updated: 12:11 AM CDT

Temperature: 74.7 °F Dew Point: 73 °F Humidity: 95% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Erindale Drive, Lacombe, LA

Updated: 12:06 AM CDT

Temperature: 74.8 °F Dew Point: 74 °F Humidity: 98% Wind: North at - Pressure: 29.80 in Hourly Precipitation: - Heat Index: 72 °F Graphs

Location: Hickory, Pearl River, LA

Updated: 12:05 AM CDT

Temperature: 73.8 °F Dew Point: 70 °F Humidity: 88% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 12:00 AM CDT

Temperature: 73.9 °F Dew Point: 74 °F Humidity: 99% Wind: NW at 1.7 mph Pressure: 29.85 in Hourly Precipitation: - Heat Index: - Graphs

Location: The Timbers, Mandeville, LA

Updated: 12:11 AM CDT

Temperature: 75.7 °F Dew Point: 74 °F Humidity: 94% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Soult Street/Molitor Street, Mandeville, LA

Updated: 12:11 AM CDT

Temperature: 74.5 °F Dew Point: 73 °F Humidity: 95% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Woodlands, Mandeville, LA

Updated: 12:12 AM CDT

Temperature: 74.8 °F Dew Point: 72 °F Humidity: 92% Wind: ESE at 4.3 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Abita Springs, Omega Centauri Observatory, Abita Springs, LA

Updated: 12:11 AM CDT

Temperature: 73.0 °F Dew Point: 72 °F Humidity: 95% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Tanager Drive, Mandeville, LA

Updated: 12:10 AM CDT

Temperature: 76.1 °F Dew Point: 74 °F Humidity: 94% Wind: North at - Pressure: 29.79 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: Crown Country, Mandeville, LA

Updated: 12:05 AM CDT

Temperature: 72.0 °F Dew Point: 70 °F Humidity: 93% Wind: Calm Pressure: 29.62 in Hourly Precipitation: - Heat Index: - Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 12:11 AM CDT

Temperature: 73.9 °F Dew Point: 72 °F Humidity: 95% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 71 °F Graphs

Location: Morningside Drive, Mandeville, LA

Updated: 12:11 AM CDT

Temperature: 75.6 °F Dew Point: 74 °F Humidity: 94% Wind: North at - Pressure: 29.70 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Estates of the Reserve, Mandeville, LA

Updated: 11:55 PM CDT

Temperature: 75.6 °F Dew Point: 73 °F Humidity: 94% Wind: North at - Pressure: 29.70 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Magnolia Ridge Drive, Mandeville, LA

Updated: 12:10 AM CDT

Temperature: 75.9 °F Dew Point: 74 °F Humidity: 95% Wind: North at - Pressure: 29.89 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 12:10 AM CDT

Temperature: 76.8 °F Dew Point: - Humidity: - Wind: North at - Pressure: 29.81 in Hourly Precipitation: - Heat Index: - Graphs

Location: Helenberg Blvd., Covington, LA

Updated: 12:11 AM CDT

Temperature: 74.7 °F Dew Point: 74 °F Humidity: 97% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 72 °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 
1012 PM CDT Friday Apr 29 2016 


Update... 
forecast for tonight still appears on track but it is 
tomorrow that appears to be in question now. There is a lot of 
indication the last few hours that suggest convection could move into 
the region much earlier than anticipated. From a model standpoint the 
last 3-4 hours of the hrrr has been trending stronger and faster with 
a squall line expected to develop in the Texas Hill country and then 
surge east possibly approaching the Atchafalaya River as early as 
15z(much like last wednesday). What could lead to this...looking at 
the WV the short wave moving over the Texas/OK panhandles and into Kansas appear 
like it could be a tad deeper with the trough axis taking a negative 
tilt as it moves through Texas. In addition every impressive divergence 
aloft over central and eastern Texas should lead to very healthy convection. 
Combine that with possibly a stronger low level jet over our area tomorrow 
morning/midday(leading to better ll convergence) and another rather 
moist and unstable environment there is a good chance that as long 
as a line develops it would continue driving east. Add in the fact 
that if there are severe segments within the line it will in all 
likelihood cold pool and thus lead to an even faster arrival time 
than what we are now going to show. Have made an adjustment to bring 
convection into the western portions of the County Warning Area by 15z and the line in 
btr before 18z. Again this could be too slow. 


There are two caveats to all of this...first a solid line must 
develop in Texas and second the short wave will pull north-northeast and we could lose all 
middle level support with convection possibly dying off just before 
getting here. Cab 


Sounding discussion... 
no problems with the flight tonight. It terminated at 7 mb about 
20.8 miles aloft and 50 miles downrange in Mississippi Sound about 
8 miles west of Cat Island below Pass Christian. 


Sounding has an adiabatic lapse rate surface to base of 
subsidence inversion near 850 mb...isothemal to 814 mb...then a 
fairly steep lapse rate above 700 mb to tropopause at 137 mb with 
a temperature of -72c. Moisture profile is somewhat saturated 
below inversion then quite dry aloft...not too distant from a 
loaded gun sounding with plenty of downdraft momementum air aloft 
should a convective process get underway. Winds are southeast 10-15 knots to 
about 1500ft...S 25-30 knots to 7900ft...then SW-northwest 15-100kt above. 
Peak wind 280/103kt at 46.5kft. 


Chap output on this sounding is quite disturbing for heavy 
rainfall potential once again. Using most unstable lapse rate 
351k lift does yield nearly 100 percent rain chance...28% chance 
severe with gust potential 52kt...Marble sized hail with a 64 vil 
and severe hail with 67 vil. Computed rainfall comes up 6.54 
inches with potential 10.01 inches! This will have to closely 
monitored as convection is blossoming steadily over Texas and 
could move into the area under strong difluent flow aloft 
Saturday. 24/rr 


&& 


Previous discussion... /issued 413 PM CDT Friday Apr 29 2016/ 


Synopsis... 
latest surface analysis showed a deep 1000mb low over southwest 
Oklahoma with a warm front extending east along the Red River to 
north Mississippi. A moderate southerly flow was present from 
central Texas to east Mississippi. Precipitable water plots showed moisture 
pooling along the frontal zone with 1.50 to 1.75 inches from 
northeast Texas to central Mississippi. Upper air analysis showed 
a negatively titled cyclonic curvature from Idaho to northern New 
Mexico...creating a divergence flow over arklatex 
region...southern and Central Plains. Isotach analysis at 250mb 
showed the split over central and divergence extending northeast. 
18 


Short term... 
while today is quiet across the forecast area...second half of 
the weekend and first half of next week will be unsettled. Upper 
level trough axis will continue to rotate east over the Central 
Plains tonight and become more closed off over Central Plains on 
Saturday. Southwest to west flow will allow the moisture to pool 
along an axis from west Tennessee to central Texas coast by 
Saturday morning...precipitable water values 1.5 to 1.8 inches along this axis and 
1 to 1.25 inches over the forecast area according to GFS. 
Ergo...relatively dry forecast will hold overnight and Saturday 
morning. Surface heating and close proximity will yield some scattered 
convection mainly across northwest zones for Saturday afternoon. 


West upper flow will allow the moisture to sag south Saturday and 
maintain rain chances overnight into Sunday. Moisture axis will 
line from southwest Louisiana to southwest Mississippi will 
values 1.8 to 2.0 inches into Sunday morning. Cape values will 
remain between 900 to 2500 j/kg through Tuesday. The main jet 
stream will remain well north of the forecast area. As result...ll 
helicity values remain below 250m/S with best values Saturday 
morning just northwest of forecast area. Moisture axis will Orient west 
to east from southwest Louisiana to just north of coastal 
Mississippi. Will maintain likely probability of precipitation with heavy rainfall across 
north half of forecast for Sunday. This axis will slowly sag south 
Sunday through Monday and rain chances will remain elevated Sunday 
through Monday and amounts of 2 to 4 inches with isolated higher 
amounts over a 2 to 3 day period. Later packages will examine for 
possible Flash Flood Watch issuance for part or all of the 
forecast area Sunday through Monday. 18 


Long term... 


GFS slightly more aggressive than Euro with wave in the 
northern stream diving south over the Mississippi Valley Tuesday 
into Wednesday...Euro positioned the wave more east. Either 
way...forcing may yield strong storms over the forecast area and 
point northeast on Tuesday. Clearing is expected Wednesday to the 
next weekend. 18 


Aviation... 


Expect MVFR to VFR conditions to prevail through the rest of the 
afternoon and evening. We expect ceilings to lower to mostly MVFR to 
possible IFR conditions later on this evening. Patchy fog is 
possible tonight and into the morning hours Saturday. Winds have 
been fairly breezy today and expect them to remain elevated tomorrow 
as well ahead of a cold front. Thunderstorms will be on The Table 
late Saturday have not put them in the forecast yet but look for the 
mention of thunderstorms to be inserted over the next issuance or 
the following issuance. 13/mh 


Marine... 


Will raise exercise caution headlines for the rest of open waters 
later tonight into Saturday. The exercise caution headlines may 
be necessary through much of the weekend...at least over the 
western waters. A strong cold front may yield Small Craft Advisory 
criteria Tuesday night. 18 


Decision support... 
dss code....blue. 
Deployed...none. 
Activation...none. 
Activities...minor river flooding. 


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 68 85 68 81 / 10 40 70 70 
btr 70 88 70 84 / 20 50 50 70 
asd 70 86 68 84 / 10 20 30 60 
msy 72 85 73 82 / 10 20 30 60 
gpt 71 85 72 84 / 10 10 20 60 
pql 68 86 69 83 / 10 10 10 50 


&& 


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


$$ 



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