Gretna, NE Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gretna, a city in Sarpy County, Nebraska.
Today
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5pm, then patchy smoke and showers and thunderstorms likely. Partly sunny, with a high near 79. North northeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Gretna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Showers And Thunderstorms Likely | 7 to 10 mph NNE | 59% |
| Tonight | 62°F | Chance Showers And Thunderstorms then Patchy Smoke | 5 to 12 mph NNE | 80% |
| Wednesday | 73°F | Patchy Smoke | 7 mph ENE | 62% |
| Wednesday Night | 58°F | Mostly Clear | 1 to 5 mph ENE | 8% |
| Thursday | 81°F | Mostly Sunny | 1 to 5 mph ESE | 1% |
| Thursday Night | 65°F | Mostly Clear | 3 mph SSE | 7% |
| Friday | 86°F | Sunny | 3 to 7 mph S | 7% |
| Friday Night | 69°F | Mostly Clear | 6 mph S | 3% |
| Saturday | 91°F | Sunny | 3 to 12 mph S | 2% |
| Saturday Night | 73°F | Mostly Clear | 8 to 12 mph S | 5% |
| Sunday | 92°F | Mostly Sunny | 7 to 12 mph SSE | 4% |
| Sunday Night | 73°F | Partly Cloudy | 12 mph SSE | 13% |
| Monday | 93°F | Mostly Sunny | 9 to 13 mph SSW | 13% |
| Monday Night | 74°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 7 to 12 mph SSE | 21% |
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 Aug 4, 2026.