Grand Bay Weather Forecast

    • 74
    • 92

    Chance Thunderstorms

    • 74
    • 94

    Mostly Sunny

    • 75
    • 95

    Slight Chance Thunderstorms

    • 72
    • 92

    Slight Chance Thunderstorms

    • 71
    • 91

    Mostly Sunny

    • 72
    • 91

    Chance Thunderstorms

Today 13 Sep Mobile Coastal

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 90s. Northwest Winds around 5 Mph, becoming southwest around 5 Mph in the afternoon. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 13 Sep Mobile Coastal

Partly cloudy in the Evening, then clearing. Humid with Lows in the mid 70s. West Winds around 5 Mph.

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Grand Bay Temperature Statistics

September Temperature

Moss Point - Trent Lott International Airport (11.2 miles)

  • Lowest 3 September, 2026

    72.6 °F

  • Average September

    82.1 °F

  • Highest 3 September, 2026

    93.7 °F

Climate (2021–2026)

Moss Point - Trent Lott International Airport (11.2 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    69.6 °F

  • Average High 2021–2026

    80.8 °F
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