Slidell Weather Forecast

    • 53
    • 75

    Sunny

    • 52
    • 76

    Mostly Sunny

    • 55
    • 77

    Sunny

    • 56
    • 79

    Mostly Sunny

    • 57
    • 80

    Partly Sunny

    • 59
    • 79

    Partly Sunny

    • 58
    • 78

    Mostly Cloudy

Today 19 Oct Wise

Mostly sunny. Highs in the upper 70s.

Tonight 19 Oct Wise

Clear. Lows in the lower 50s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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Slidell Temperature Statistics

October Temperature

Decatur, Decatur Municipal Airport (13 miles)

  • Lowest 17 October, 2026

    42.8 °F

  • Average October

    72.9 °F

  • Highest 13 October, 2026

    91.4 °F

Climate (2021–2026)

Decatur, Decatur Municipal Airport (13 miles)

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  • Average Low 2021–2026

    57.5 °F

  • Average 2021–2026

    67.5 °F

  • Average High 2021–2026

    78.1 °F
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