Morgan City, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Morgan City, a city in St. Mary County, Louisiana.
Overnight
75°F
Clear
Clear, with a low around 75. East wind around 0 mph.
7-day forecast for Morgan City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 75°F | Clear | 0 mph | 0% |
| Saturday | 90°F | Sunny | 0 to 5 mph E | 2% |
| Saturday Night | 77°F | Mostly Clear | 0 to 5 mph S | 2% |
| Sunday | 91°F | Sunny | 0 to 5 mph E | 12% |
| Sunday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 18% |
| Monday | 91°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NE | 35% |
| Monday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 35% |
| Tuesday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 23% |
| Tuesday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 23% |
| Wednesday | 91°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 17% |
| Wednesday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 17% |
| Thursday | 89°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 15% |
| Thursday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph NE | 15% |
| Friday | 88°F | Sunny | 5 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Morgan City (29.710, -91.192). Updated through the day.
Growing snapshot for Morgan City
Last spring frost
Jan 30
First fall frost
Jan 1
Growing season
335 days
Hardiness zone
9b
More local growing data for Morgan City: nearby ZIP 70342 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Morgan City, La (3.8 mi from Morgan City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.