Slidell Weather Forecast

    • 32
    • 78

    Breezy

    • 26
    • 43

    Partly Sunny

    • 34
    • 49

    Mostly Sunny

    • 36
    • 56

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 50
    • 69

    Partly Sunny

Today 28 Dec Wise

Mostly sunny and windy. Highs in the mid 70s. Temperatures falling into the upper 60s in the afternoon. Southwest Winds 5 to 10 Mph, becoming northwest 20 to 30 Mph in the afternoon.

Tonight 28 Dec Wise

Partly cloudy in the Evening, then becoming mostly clear. Windy and much cooler with Lows in the lower 30s. North Winds 20 to 30 Mph, Diminishing to 10 to 20 Mph after midnight. Wind Gusts up to 40 Mph are possible.

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Slidell Temperature Statistics

December Temperature

Decatur, Decatur Municipal Airport (13 miles)

  • Lowest 14 December, 2025

    24.6 °F

  • Average December

    50.9 °F

  • Highest 20 December, 2025

    81.5 °F

Climate (2020–Present)

Decatur, Decatur Municipal Airport (13 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    66.7 °F

  • Average High 2020–2025

    77 °F
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