Our Proprietary 10-Day Forecast

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Current warnings over Slidell, Louisiana
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Slidell, Louisiana red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Slidell, Louisiana red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around St. Tammany County, LA

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Slidell, Louisiana

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Slidell, LA please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Slidell, LA

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Slidell, LA, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Slidell, Louisiana

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around St. Tammany County, Louisiana

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Slidell, Louisiana Climate Summary

General Climate

    •   Climate Type

Humid subtropical climate

    •   Average Annual Temperature

69.4°F (20.8°C)

    •   Average Annual Precipitation

63.3 inches (160.8 cm)

    •   Average Annual Snowfall

0.5 inches (1.3 cm)

Temperature

    •   Average January Temperature

47.7°F (8.7°C)

    •   Average July Temperature

82.6°F (28.1°C)

    •   Record High Temperature

106°F (41.1°C)

    •   Record Low Temperature

-4°F (-20°C)

Precipitation

    •   Average Annual Precipitation

63.3 inches (160.8 cm)

    •   Average Number of Rainy Days

110 days

    •   Wettest Month

July (8.8 inches or 22.4 cm)

    •   Driest Month

October (2.6 inches or 6.6 cm)

Snowfall

    •   Average Annual Snowfall

0.5 inches (1.3 cm)

    •   Record 24-Hour Snowfall

5.0 inches (12.7 cm)

Other

    •   Average Annual Sunshine

2,500 hours

    •   Average Relative Humidity

77%

    •   Average Wind Speed

8.5 mph (13.7 km/h)

Climate Summary

Slidell, Louisiana has a humid subtropical climate with hot, humid summers and mild winters. The average annual temperature is 69.4°F (20.8°C), with average January and July temperatures of 47.7°F (8.7°C) and 82.6°F (28.1°C), respectively. The area receives an average of 63.3 inches (160.8 cm) of precipitation per year, with the wettest month being July (8.8 inches or 22.4 cm) and the driest month being October (2.6 inches or 6.6 cm). Snowfall is rare in Slidell, with an average annual snowfall of just 0.5 inches (1.3 cm). The area receives an average of 2,500 hours of sunshine per year, with an average relative humidity of 77%. The average wind speed is 8.5 mph (13.7 km/h).

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Slidell is home to the Honey Island Swamp, a vast wetland ecosystem known for its diverse wildlife, including alligators, black bears, and over 200 bird species.

    •   The city is located on the shores of Lake Pontchartrain, the largest saltwater lake in the United States.

Science

    •   Slidell is home to the National Estuary Research Reserve, a 26,000-acre reserve dedicated to studying and protecting the estuary ecosystem.

    •   The city is also home to the NASA Slidell Computer Complex, which played a crucial role in the Apollo moon missions.

Personalities

    •   John Slidell, a prominent Confederate diplomat, founded the city in 1888.

    •   Jim Garrison, the New Orleans District Attorney who investigated the assassination of President John F. Kennedy, was born in Slidell.

    •   Author John Grisham grew up in Slidell and set several of his novels there.

Tourist Attractions
1.Honey Island Swamp Tour:

Explore the unique ecosystem of the Honey Island Swamp on a guided boat tour, where you can see alligators, birds, and other wildlife up close.

2.Slidell Heritage Museum:

Learn about the history and culture of Slidell and the surrounding area through exhibits on local industries, Mardi Gras, and the city's founding.

3.Big Branch Marsh National Wildlife Refuge:

Visit this vast wetland habitat for a variety of birdwatching, hiking, and kayaking opportunities. The refuge is home to a diverse array of birds, including migratory species and resident waterfowl.

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