Gretna Weather Forecast
- 75
- 92
Chance Rain Showers
- 76
- 96
Mostly Sunny
- 73
- 93
Partly Sunny
- 70
- 92
Slight Chance Thunderstorms
- 68
- 91
Slight Chance Thunderstorms
- 64
- 86
Mostly Sunny
Today 15 Aug Sarpy
Mostly sunny. A chance of Showers and Thunderstorms in the Morning, then a slight chance of Showers in the afternoon. Humid with Highs in the mid 90s. South Winds 10 to 15 Mph. Chance of rain 30 percent. Heat index Values up to 106 in the afternoon.
Tonight 15 Aug Sarpy
Mostly clear with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 70s. South Winds around 10 Mph. Chance of rain 20 percent.
Gretna Temperature Statistics
August Temperature
Omaha, Millard Airport (7.5 miles)
Lowest 2 August, 2025
56.8 °FAverage August
73.4 °FHighest 8 August, 2025
91.9 °F
Climate (2020–Present)
Omaha, Millard Airport (7.5 miles)
Average Low 2020–2025
43.3 °FAverage 2020–2025
53.6 °FAverage High 2020–2025
64.1 °F