Gretna, NE Weather & Growing Conditions
Tonight
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 9pm. Mostly cloudy. Low around 68, with temperatures rising to around 71 overnight. East wind 3 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 68°F | Chance Showers And Thunderstorms | 3 to 8 mph E | 44% |
| Saturday | 78°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 25% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 8 mph N | 29% |
| Sunday | 65°F | Chance Rain Showers | 8 mph NNE | 36% |
| Sunday Night | 59°F | Chance Rain Showers | 6 mph NE | 37% |
| Monday | 60°F | Chance Rain Showers | 7 mph NE | 52% |
| Monday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 2 to 6 mph NE | 46% |
| Tuesday | 61°F | Mostly Cloudy | 5 mph NE | 8% |
| Tuesday Night | 52°F | Partly Cloudy | 3 mph E | 3% |
| Wednesday | 64°F | Partly Sunny | 3 mph SE | 6% |
| Wednesday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph SE | 16% |
| Thursday | 65°F | Chance Rain Showers | 5 mph SE | 31% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 2 mph SE | 20% |
| Friday | 67°F | Slight Chance Rain Showers | 1 to 5 mph SE | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gretna, NE
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
5b
Explore more for Gretna, NE: full frost dates · planting calendar · Nebraska frost dates
Climate data from the nearest NOAA station, Gretna 4Ne, Ne (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.