Gretna Weather Forecast

    • 79
    • 92

    Mostly Sunny

    • 78
    • 88

    Rain Showers Likely

    • 75
    • 88

    Sunny

    • 76
    • 89

    Mostly Sunny

    • 77
    • 90

    Chance Thunderstorms

    • 77
    • 90

    Chance Thunderstorms

Today 15 Sep Upper Jefferson

Sunny. Highs in the lower 90s. North Winds around 5 Mph, becoming east around 5 Mph this afternoon. Heat index Values up to 107.

Tonight 15 Sep Upper Jefferson

Mostly clear. Humid with Lows in the upper 70s. Southeast Winds around 5 Mph, becoming northeast after midnight.

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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 13 September, 2026

    72 °F

  • Average September

    81.1 °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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