Gretna, NE Weather & Growing Conditions
Tonight
43°F
Chance Rain Showers then Cloudy
A chance of rain showers before 11pm. Cloudy. Low around 43, with temperatures rising to around 45 overnight. Northwest wind around 15 mph, with gusts as high as 28 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 | 43°F | Chance Rain Showers then Cloudy | 15 mph NW | 42% |
| Wednesday | 51°F | Mostly Cloudy | 9 to 13 mph WNW | 10% |
| Wednesday Night | 41°F | Mostly Cloudy | 9 mph WNW | 10% |
| Thursday | 51°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 | 1 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% |
| Tuesday | 64°F | Mostly Sunny | 5 mph NE | 1% |
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
6a
Explore more for Gretna, NE: full frost dates · planting calendar · Nebraska frost dates
Climate data from the nearest NOAA station, Gretna 4Ne, Ne (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.