Gretna, NE Weather & Growing Conditions
Tonight
43°F
Slight Chance Rain Showers then Cloudy
A slight 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 29 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Slight Chance Rain Showers then Cloudy | 15 mph NW | 17% |
| Wednesday | 51°F | Mostly Cloudy | 9 to 13 mph WNW | 8% |
| Wednesday Night | 41°F | Mostly Cloudy | 9 mph WNW | 9% |
| Thursday | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NNW | 22% |
| Thursday Night | 38°F | Mostly Cloudy | 6 mph N | 0% |
| Friday | 51°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Friday Night | 34°F | Partly Cloudy | 1 mph S | 0% |
| Saturday | 55°F | Mostly Sunny | 3 mph SSW | 0% |
| Saturday Night | 37°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 61°F | Sunny | 3 mph WSW | 0% |
| Sunday Night | 41°F | Clear | 5 mph SSW | 0% |
| Monday | 66°F | Sunny | 7 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 3 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 3 mph NNE | 0% |
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 Nov 4, 2026.