Slidell Airport Weather Forecast

    • 56
    • 65

    Chance Thunderstorms

    • 43
    • 72

    Chance Rain Showers

    • 40
    • 61

    Mostly Sunny

    • 55
    • 70

    Partly Sunny

    • 56
    • 74

    Mostly Cloudy

    • 54
    • 71

    Mostly Cloudy

Today 17 Dec Northern St. Tammany

Mostly cloudy with a 20 percent chance of Showers. Highs in the mid 60s. East Winds 5 to 10 Mph.

Tonight 17 Dec Northern St. Tammany

Cloudy. Patchy fog in the evening. A slight chance of Showers in the Evening, then a chance of Showers and Thunderstorms after midnight. Not as cool. Near steady temperature in the upper 50s. East Winds around 5 Mph. Chance of rain 50 percent.

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Slidell Airport Temperature Statistics

December Temperature

Slidell, Slidell Airport (0 miles)

  • Lowest 9 December, 2025

    32 °F

  • Average December

    50.9 °F

  • Highest 13 December, 2025

    75.9 °F

Climate (2020–Present)

Slidell, Slidell Airport (0 miles)

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  • Average Low 2020–2025

    59.8 °F

  • Average 2020–2025

    69.9 °F

  • Average High 2020–2025

    80.5 °F
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