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
71°F
Patchy Fog
Patchy fog before 5am, then patchy fog and a slight chance of rain showers. Partly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Morgan City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Patchy Fog | 5 mph SW | 17% |
| Wednesday | 77°F | Patchy Fog then Mostly Sunny | 5 mph NW | 21% |
| Wednesday Night | 64°F | Mostly Clear | 5 mph N | 0% |
| Thursday | 78°F | Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 66°F | Partly Cloudy | 0 to 5 mph NW | 9% |
| Friday | 77°F | Partly Sunny | 5 mph N | 8% |
| Friday Night | 63°F | Mostly Clear | 5 to 10 mph N | 2% |
| Saturday | 73°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Saturday Night | 57°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph N | 15% |
| Sunday | 66°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 53°F | Partly Cloudy | 5 mph N | 10% |
| Monday | 68°F | Sunny | 5 mph N | 5% |
| Monday Night | 54°F | Mostly Clear | 0 to 5 mph N | 5% |
| Tuesday | 71°F | Sunny | 0 to 5 mph N | 4% |
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 Nov 4, 2026.