Gretna, LA Weather & Growing Conditions
Tonight
75°F
Clear
Clear. Low around 75, with temperatures rising to around 77 overnight. East wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Clear | 0 mph | 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% |
| Friday | 87°F | Sunny | 10 to 15 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gretna, LA
Last spring frost
Feb 1
First fall frost
Dec 31
Growing season
330 days
Hardiness zone
9b
Explore more for Gretna, LA: full frost dates · planting calendar · Louisiana frost dates
Climate data from the nearest NOAA station, Terrytown 3S, La (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.