Gretna, NE Weather & Growing Conditions
This Afternoon
89°F
Sunny
Sunny, with a high near 89. South wind around 12 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Sunny | 12 mph S | 2% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 3 to 9 mph S | 43% |
| Saturday | 78°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 29% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 7 mph N | 31% |
| Sunday | 65°F | Chance Rain Showers | 8 mph NNE | 35% |
| Sunday Night | 58°F | Chance Rain Showers | 6 mph NE | 42% |
| Monday | 60°F | Chance Rain Showers | 7 mph NE | 53% |
| Monday Night | 55°F | Chance Rain Showers then Mostly Cloudy | 6 mph NE | 44% |
| Tuesday | 60°F | Mostly Cloudy | 5 mph NE | 7% |
| Tuesday Night | 52°F | Partly Cloudy | 3 mph E | 2% |
| Wednesday | 63°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 | 3 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
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 Sep 18, 2026.