Gretna, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gretna, a city in Jefferson County, Louisiana.
Today
93°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 4pm. Sunny. High near 93, with temperatures falling to around 91 in the afternoon. Northwest wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast for Gretna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 17% |
| Tonight | 79°F | Mostly Clear | 5 mph SW | 8% |
| Wednesday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 33% |
| Wednesday Night | 78°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Thursday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph SE | 28% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 28% |
| Friday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph E | 26% |
| Friday Night | 78°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 26% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 32% |
| Saturday Night | 79°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 32% |
| Sunday | 91°F | Showers And Thunderstorms Likely | 0 to 10 mph E | 55% |
| Sunday Night | 79°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 55% |
| Monday | 91°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 61% |
| Monday Night | 78°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 61% |
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 Aug 4, 2026.