Gretna, LA Weather & Growing Conditions
Overnight
77°F
Mostly Clear
Mostly clear. Low around 77, with temperatures rising to around 79 overnight. West wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 77°F | Mostly Clear | 0 mph | 6% |
| Tuesday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 17% |
| Tuesday Night | 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% |
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 Aug 4, 2026.