Treasure Bay Weather Forecast

    • 52
    • 67

    Chance Rain Showers

    • 54
    • 58

    Sunny

    • 60
    • 64

    Mostly Sunny

    • 59
    • 64

    Slight Chance Rain Showers

    • 60
    • 63

    Partly Sunny

    • 60
    • 64

    Mostly Sunny

Today 18 Dec Lower St. Bernard

Areas of fog this morning. Mostly cloudy with a chance of Showers and Thunderstorms this Morning, then mostly sunny with a chance of Showers with a slight chance of Thunderstorms this afternoon. Highs around 70. South Winds 5 to 10 Mph, becoming southwest this afternoon. Chance of rain 50 percent.

Tonight 18 Dec Lower St. Bernard

Patchy fog in the evening. Partly cloudy with a slight chance of Showers in the Evening, then mostly clear after midnight. Lows in the lower 50s. West Winds around 10 Mph, becoming north after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Treasure Bay Temperature Statistics

December Temperature

Bay St. Louis, Stennis International Airport (38.5 miles)

  • Lowest 15 December, 2025

    26.6 °F

  • Average December

    52.4 °F

  • Highest 13 December, 2025

    77 °F

Climate (2020–Present)

Bay St. Louis, Stennis International Airport (38.5 miles)

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  • Average Low 2020–2025

    59.9 °F

  • Average 2020–2025

    71.2 °F

  • Average High 2020–2025

    78 °F
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