Slidell, Louisiana Weather
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Weather Forecast for Slidell, Louisiana : St. Tammany County
Issued: 12:26 am CDT Jul 21, 2025 Latitude: 30.2751945 Longitude: -89.7811745 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Clear on Overnight Sunny on Monday 20% chance of thunderstorms on Tuesday 50% chance of thunderstorms on Wednesday 80% chance of thunderstorms on Thursday Thunderstorms on Friday Thunderstorms on Saturday Thunderstorms on Sunday
Low: 76°F High: 95°F High: 96°F High: 96°F High: 91°F High: 90°F High: 91°F High: 92°F
Low: 77°F Low: 77°F Low: 75°F Low: 76°F Low: 75°F Low: 76°F  
Mostly Clear Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
SLIDELL - (KASD)
84°
Clear
as of 11:53 PM CDST
Rel. Humidity: 74%
Dew Point: 75°F
Visibility: 10 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LAKEFRONT ARPT - (KNEW)
84°
Clear
as of 11:53 PM CDST
Rel. Humidity: 74%
Dew Point: 75°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
NEW ORLEANS NAS - (KNBG)
79°
Clear
as of 11:55 PM CDST
Rel. Humidity: 88%
Dew Point: 75°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
5 MPH
240° Southwest
Cloud Level(s): Clear
Current Conditions at
NEW ORLEANS INTL - (KMSY)
82°
Mostly Clear
as of 11:53 PM CDST
Rel. Humidity: 83%
Dew Point: 77°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
6 MPH
200° South
Cloud Level(s): Few at 4000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 76. Southwest wind around 5 mph becoming calm.
Sunny on Monday Monday... Sunny and hot, with a high near 95. Heat index values as high as 106. Calm wind becoming southwest around 5 mph in the afternoon.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 77. Southwest wind around 5 mph.
20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 96. Heat index values as high as 110. Northwest wind around 5 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 77. Calm wind becoming west around 5 mph after midnight.
50% chance of thunderstorms Wednesday Wednesday... A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny and hot, with a high near 96. Northwest wind around 5 mph. Chance of precipitation is 50%.
60% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 60%.
80% chance of thunderstorms Thursday Thursday... Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 91. Northeast wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 80%.
20% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening.
Thunderstorms on Friday Friday... Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Southeast wind 5 to 10 mph.
20% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm in the evening.
Thunderstorms on Saturday Saturday... Showers and thunderstorms. Mostly sunny, with a high near 91. Light south wind increasing to 5 to 10 mph in the morning.
10% chance of thunderstorms Saturday Night Saturday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.
Thunderstorms on Sunday Sunday... Showers and thunderstorms likely. Mostly sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Current Radar Image


Sun Almanac for Slidell, Louisiana
Sunrise: 06:11 AM
Sunset: 8:00 PM
Civil Sunrise:05:45 AM
Civil Sunset: 8:26 PM
Nautical Sunrise: 05:13 AM
Nautical Sunset: 8:58 PM
Astro Sunrise: 04:39 AM
Astro Sunset: 9:32 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.