Gretna, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gretna, a city in Sarpy County, Nebraska.
This Afternoon
57°F
Rain Showers
Rain showers. Cloudy. High near 57, with temperatures falling to around 52 in the afternoon. North northwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Gretna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Rain Showers | 18 mph NNW | 77% |
| Tonight | 43°F | Rain Showers Likely then Cloudy | 10 to 17 mph NW | 60% |
| Wednesday | 52°F | Mostly Cloudy | 8 to 13 mph WNW | 9% |
| Wednesday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 8 mph WNW | 18% |
| Thursday | 52°F | Chance Rain Showers | 9 mph NW | 32% |
| Thursday Night | 38°F | Mostly Cloudy | 6 mph NNW | 3% |
| Friday | 52°F | Partly Sunny | 0 to 3 mph N | 0% |
| Friday Night | 36°F | Mostly Cloudy | 2 mph SSW | 0% |
| Saturday | 59°F | Mostly Sunny | 3 mph WSW | 3% |
| Saturday Night | 39°F | Mostly Clear | 3 mph W | 6% |
| Sunday | 63°F | Sunny | 3 mph WSW | 1% |
| Sunday Night | 42°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 66°F | Sunny | 5 to 8 mph WSW | 0% |
| Monday Night | 43°F | Mostly Clear | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Gretna (41.128, -96.197). Updated through the day.
Growing snapshot for Gretna
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
6a
More local growing data for Gretna: nearby ZIP 68136 weather · frost dates · planting calendar · Nebraska frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gretna 4Ne, Ne (0.6 mi from Gretna). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.