Slidell Weather in September

In Slidell, September brings very high daytime temperatures around 31°C (88°F), with nights cooling to 21°C (70°F). Expect quite a bit of rainfall this month.

Rainfall in Slidell in September

On average, there are about 12 days with rain during this month, averaging 129 mm (5.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Slidell in September

Expect highs of 31°C (88°F) in Slidell in September, with nights dropping to around 21°C (70°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights are mild at around 21°C (70°F), which is comfortable for most people.

Sunshine in Slidell in September

Expect sunny days throughout the month, with an estimated 227 hours of sunshine. This makes it a pleasant time to visit Slidell.

If you prefer dry days with pleasant temperatures, October and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Slidell's climate page.

Slidell Temperature in September

Min Temperature 21°C (70°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 40%  

Precipitation 129 mm (5.1 in)  

Rainy days 12 days  

Humidity 78% *  

Sunshine 227 hours *  

Percentage Sunshine 62% *  

* Data from: New Orleans, the United States of America (55 KM, 34 Miles).

What to Wear in Slidell in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Slidell in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Slidell's climate page.

More climate data for Slidell

Temperature Rainfall Sunshine Humidity

See the full Slidell climate overview or explore weather in the United States of America.