Gretna, LA Weather & Growing Conditions
Overnight
68°F
Patchy Fog
Patchy fog. Partly cloudy. Low around 68, with temperatures rising to around 71 overnight. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Patchy Fog | 5 mph S | 1% |
| Wednesday | 79°F | Chance Rain Showers | 0 to 5 mph W | 38% |
| Wednesday Night | 63°F | Patchy Fog | 0 to 5 mph N | 0% |
| Thursday | 79°F | Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 65°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Friday | 77°F | Partly Sunny | 5 mph N | 7% |
| Friday Night | 60°F | Mostly Clear | 0 to 10 mph N | 1% |
| Saturday | 72°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 54°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Sunday | 67°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 52°F | Partly Cloudy | 5 to 10 mph N | 6% |
| Monday | 68°F | Sunny | 5 to 10 mph N | 7% |
| Monday Night | 52°F | Mostly Clear | 0 to 5 mph N | 5% |
| Tuesday | 70°F | Sunny | 0 to 5 mph NE | 6% |
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 Nov 4, 2026.