With a population of around 27,900, Slidell sits in Louisiana, United States. The city operates in the Central Time Zone.
In 2025, Slidell recorded an average annual temperature of 69°F. The hottest temperatures reached 95°F in July; the coolest were 16°F in January. Total precipitation for the year was 57 inches, with the wettest month being May. Snowfall for the year totaled approximately 1 inches.
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