Ninemile Bay Weather Forecast

    • 84
    • 91

    Slight Chance Thunderstorms

    • 84
    • 91

    Partly Sunny

    • 84
    • 91

    Slight Chance Thunderstorms

    • 84
    • 91

    Mostly Sunny

    • 85
    • 91

    Mostly Sunny

    • 85
    • 90

    Mostly Sunny

Today 19 Aug Lower St. Bernard

Mostly sunny. A slight chance of Showers and Thunderstorms. Highs in the lower 90s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 19 Aug Lower St. Bernard

Partly cloudy. Humid with Lows in the lower 80s. Southwest Winds 5 to 10 Mph. Heat index Values up to 108 early.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ninemile Bay Temperature Statistics

August Temperature

Bay St. Louis, Stennis International Airport (24.2 miles)

  • Lowest 4 August, 2026

    69.8 °F

  • Average August

    86.7 °F

  • Highest 1 August, 2026

    95 °F

Climate (2021–2026)

Bay St. Louis, Stennis International Airport (24.2 miles)

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  • Average Low 2021–2026

    60.4 °F

  • Average 2021–2026

    71.7 °F

  • Average High 2021–2026

    78.5 °F
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