Grand Bay Weather Forecast

    • 73
    • 92

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

    • 73
    • 93

    Slight Chance Thunderstorms

    • 73
    • 94

    Slight Chance Thunderstorms

    • 72
    • 93

    Slight Chance Thunderstorms

Today 11 Sep Concordia

Mostly sunny with a chance of Showers and Thunderstorms. Humid with Highs in the mid 90s. Southwest Winds around 5 Mph, becoming south around 5 Mph in the afternoon. Chance of rain 50 percent. Heat index Values up to 105.

Tonight 11 Sep Concordia

Partly cloudy. Near steady temperature in the mid 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Bay Temperature Statistics

September Temperature

New Roads False River Regional Airport (28 miles)

  • Lowest 8 September, 2026

    72.3 °F

  • Average September

    80.7 °F

  • Highest 3 September, 2026

    94.3 °F

Climate (2021–2026)

New Roads False River Regional Airport (28 miles)

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  • Average Low 2021–2026

    59.3 °F

  • Average 2021–2026

    68.3 °F

  • Average High 2021–2026

    79 °F
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