Grand Bay Weather Forecast

    • 74
    • 94

    Chance Thunderstorms

    • 74
    • 91

    Thunderstorms Likely

    • 73
    • 90

    Rain Showers

    • 74
    • 93

    Rain Showers Likely

    • 73
    • 93

    Thunderstorms Likely

    • 73
    • 90

    Rain Showers Likely

    • 73
    • 91

    Chance Thunderstorms

Today 3 Sep Mobile Coastal

Partly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 105.

Tonight 3 Sep Mobile Coastal

Partly cloudy. A chance of Showers and Thunderstorms after midnight. Lows in the upper 70s. South Winds around 5 Mph, becoming northeast after midnight. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Bay Temperature Statistics

September Temperature

Moss Point - Trent Lott International Airport (11.2 miles)

  • Lowest 1 September, 2026

    73.9 °F

  • Average September

    81.1 °F

  • Highest 1 September, 2026

    90 °F

Climate (2021–2026)

Moss Point - Trent Lott International Airport (11.2 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    69.6 °F

  • Average High 2021–2026

    80.8 °F
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