Gretna Weather Forecast

    • 77
    • 90

    Chance Thunderstorms

    • 78
    • 91

    Chance Thunderstorms

    • 78
    • 92

    Chance Thunderstorms

    • 79
    • 92

    Mostly Sunny

    • 78
    • 90

    Chance Thunderstorms

    • 76
    • 89

    Slight Chance Thunderstorms

Today 12 Sep Upper Jefferson

Mostly sunny. A slight chance of Showers and Thunderstorms this Morning, then a chance of Showers and Thunderstorms this afternoon. Highs around 90. Southwest Winds around 5 Mph. Chance of rain 50 percent.

Tonight 12 Sep Upper Jefferson

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the upper 70s. South Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gretna Temperature Statistics

September Temperature

New Orleans Naval Air Station - Alvin Callender Field (5.6 miles)

  • Lowest 3 September, 2026

    75 °F

  • Average September

    81.5 °F

  • Highest 1 September, 2026

    91 °F

Climate (2021–2026)

New Orleans Naval Air Station - Alvin Callender Field (5.6 miles)

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  • Average Low 2021–2026

    62.3 °F

  • Average 2021–2026

    71 °F

  • Average High 2021–2026

    79.3 °F
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