Slidell
Louisiana, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Slidell, LA

September, the first month of the autumn, in Slidell, is also a hot month, with average temperature fluctuating between 88°F (31.1°C) and 68°F (20°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still tropical 88°F (31.1°C). In September, in Slidell, the average low-temperature is 68°F (20°C).

Rainfall

Throughout September, 5.2" (131.1mm) of precipitation is accumulated. During the entire year, Slidell aggregates up to 62.7" (1591.7mm) of precipitation.

Daylight

The average length of the day in September in Slidell is 12.3h.

What is the temperature in September in Slidell?

The average high-temperature, in September, in Slidell, is 88°F (31.1°C), while the average low-temperature is 68°F (20°C).

How much does it rain in Slidell in September?

Throughout September, 5.2" (131.1mm) of precipitation is accumulated.

How many hours of daylight does Slidell have in September?

In September, the average length of the day is 12.3h.
Average temperature in September - Slidell, LA
  • Average high temperature in September: 88°F

Warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is January (61°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (40°F).

Average rainfall in September - Slidell, LA
  • Average rainfall in September: 5.2"

The wettest month (with the highest rainfall) is July (6.6").
The driest month (with the lowest rainfall) is October (3.1").

Average daylight in September - Slidell, LA
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).