Slidell Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Slidell, Louisiana. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Slidell?

In Slidell, July has the greatest precipitation of any month. On average, Slidell gets 7.8 inches of precipitation in July.

However, August is the month with the greatest chance of precipitation. 44.8% of days in August will have at least some rain.

What's the Driest Month in Slidell?

In Slidell, October has the least precipitation of any month. On average, Slidell gets 4.07 inches of precipitation in October.

October is also the month where rain is least common. 22.6% of days in October will have measurable rain.

Month	Precipitation	% Chance
January	5.98 in	33.9
February	4.50 in	32.5
March	5.15 in	29.2
April	5.46 in	26.1
May	5.74 in	24.3
June	5.94 in	37.3
July	7.85 in	44.2
August	7.56 in	44.8
September	4.87 in	32.2
October	4.07 in	22.6
November	4.31 in	25.1
December	4.88 in	33.0
Year	65.75 in	32.0

Weather Station Details

Years	Station	Coordinates
1956–2024	Slidell	location