Gretna, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gretna, a city in Jefferson County, Louisiana.
This Afternoon
90°F
Sunny
Sunny. High near 90, with temperatures falling to around 87 in the afternoon. East wind around 10 mph.
7-day forecast for Gretna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 90°F | Sunny | 10 mph E | 0% |
| Tonight | 75°F | Clear | 0 to 5 mph E | 0% |
| Saturday | 92°F | Sunny | 0 to 5 mph NE | 3% |
| Saturday Night | 77°F | Clear | 0 to 5 mph S | 2% |
| Sunday | 93°F | Sunny | 0 to 5 mph N | 5% |
| Sunday Night | 78°F | Mostly Clear | 0 mph | 5% |
| Monday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph N | 22% |
| Monday Night | 78°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 22% |
| Tuesday | 92°F | Sunny | 0 to 5 mph NE | 11% |
| Tuesday Night | 78°F | Mostly Clear | 0 to 5 mph SE | 11% |
| Wednesday | 91°F | Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 77°F | Mostly Clear | 0 to 10 mph NE | 12% |
| Thursday | 89°F | Sunny | 10 to 15 mph NE | 9% |
| Thursday Night | 76°F | Mostly Clear | 5 to 10 mph NE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Gretna (29.911, -90.052). Updated through the day.
Growing snapshot for Gretna
Last spring frost
Feb 1
First fall frost
Dec 31
Growing season
330 days
Hardiness zone
9b
More local growing data for Gretna: nearby ZIP 70053 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Avondale
Barataria
Belle Chasse
Bridge City
Elmwood
Estelle
Grand Isle
Harahan
Harvey
Jean Lafitte
Jefferson
Kenner
Lafitte
Metairie
New Orleans Station
River Ridge
Terrytown
Timberlane
Waggaman
Woodmere
Climate data from the nearest NOAA station, Terrytown 3S, La (1.2 mi from Gretna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.