Gretna Weather Forecast

    • 68
    • 95

    Rain Showers Likely

    • 63
    • 78

    Chance Rain Showers

    • 59
    • 65

    Rain Showers Likely

    • 54
    • 60

    Mostly Cloudy

    • 52
    • 61

    Mostly Cloudy

    • 55
    • 63

    Chance Rain Showers

Today 18 Sep Sarpy

Mostly cloudy in the Morning, then becoming partly sunny. Highs in the upper 60s.

Tonight 18 Sep Sarpy

Partly cloudy with a slight chance of Showers and Thunderstorms this Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming east after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gretna Temperature Statistics

September Temperature

Omaha, Millard Airport (7.5 miles)

  • Lowest 14 September, 2026

    57 °F

  • Average September

    75.5 °F

  • Highest 2 September, 2026

    97.3 °F

Climate (2021–2026)

Omaha, Millard Airport (7.5 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    64.4 °F
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