Shell Island Lake Weather Forecast

    • 79
    • 82

    Partly Sunny

    • 80
    • 83

    Partly Sunny

    • 80
    • 85

    Partly Sunny

    • 80
    • 84

    Mostly Sunny

    • 81
    • 84

    Chance Rain Showers

    • 82
    • 85

    Chance Thunderstorms

Today 25 Sep Lower St. Bernard

Showers likely. A slight chance of Thunderstorms in the Morning, then a chance of Thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 70 percent.

Tonight 25 Sep Lower St. Bernard

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 70s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Shell Island Lake Temperature Statistics

September Temperature

Bay St. Louis, Stennis International Airport (30.4 miles)

  • Lowest 18 September, 2026

    68 °F

  • Average September

    84.3 °F

  • Highest 14 September, 2026

    95 °F

Climate (2021–2026)

Bay St. Louis, Stennis International Airport (30.4 miles)

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  • Average Low 2021–2026

    60.5 °F

  • Average 2021–2026

    71.8 °F

  • Average High 2021–2026

    78.6 °F
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