Gretna, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gretna, a city in Jefferson County, Louisiana.
This Afternoon
81°F
Mostly Sunny
Mostly sunny. High near 81, with temperatures falling to around 76 in the afternoon. Southeast wind around 5 mph.
7-day forecast for Gretna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Mostly Sunny | 5 mph SE | 3% |
| Tonight | 69°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph S | 7% |
| Wednesday | 80°F | Chance Rain Showers | 0 to 5 mph W | 29% |
| Wednesday Night | 65°F | Partly Cloudy | 0 mph | 2% |
| Thursday | 79°F | Sunny | 0 to 5 mph W | 13% |
| Thursday Night | 64°F | Chance Rain Showers | 0 to 5 mph SW | 31% |
| Friday | 77°F | Chance Rain Showers | 5 mph NW | 39% |
| Friday Night | 59°F | Partly Cloudy | 0 to 10 mph N | 9% |
| Saturday | 73°F | Mostly Sunny | 5 to 10 mph N | 8% |
| Saturday Night | 54°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph N | 15% |
| Sunday | 68°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 52°F | Mostly Clear | 5 to 10 mph N | 4% |
| Monday | 69°F | Sunny | 5 to 10 mph N | 4% |
| Monday Night | 52°F | Mostly Clear | 0 to 5 mph NE | 2% |
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 Nov 4, 2026.