Bayou Vista, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bayou Vista, a community in St. Mary County, Louisiana.
Today
92°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Sunny. High near 92, with temperatures falling to around 88 in the afternoon. Heat index values as high as 98. Northwest wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bayou Vista
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph NW | 30% |
| Tonight | 77°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SW | 17% |
| Wednesday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 41% |
| Wednesday Night | 76°F | Mostly Clear | 0 to 5 mph SW | 9% |
| Thursday | 92°F | Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SE | 56% |
| Thursday Night | 75°F | Showers And Thunderstorms Likely then Mostly Clear | 0 to 5 mph SE | 56% |
| Friday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 49% |
| Friday Night | 75°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 49% |
| Saturday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 51% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 51% |
| Sunday | 91°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 69% |
| Sunday Night | 76°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 69% |
| Monday | 90°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 62% |
| Monday Night | 76°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph S | 62% |
Forecast source: National Weather Service (api.weather.gov) for Bayou Vista (29.691, -91.267). Updated through the day.
Growing snapshot for Bayou Vista
Last spring frost
Jan 30
First fall frost
Jan 1
Growing season
335 days
Hardiness zone
9b
More local growing data for Bayou Vista: 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 Bayou Vista). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.