Romeville, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Romeville, a community in St. James County, Louisiana.
Overnight
73°F
Clear
Clear, with a low around 73. Wind around 0 mph.
7-day forecast for Romeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Clear | 0 mph | 0% |
| Tuesday | 94°F | Sunny | 0 mph | 7% |
| Tuesday Night | 75°F | Mostly Clear | 0 mph | 9% |
| Wednesday | 95°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 27% |
| Wednesday Night | 74°F | Mostly Clear | 0 to 5 mph S | 8% |
| Thursday | 94°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 37% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 37% |
| Friday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 27% |
| Friday Night | 74°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 27% |
| Saturday | 93°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 36% |
| Saturday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 36% |
| Sunday | 93°F | Showers And Thunderstorms Likely | 0 to 5 mph E | 61% |
| Sunday Night | 75°F | Showers And Thunderstorms Likely | 0 mph | 61% |
| Monday | 92°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 72% |
Forecast source: National Weather Service (api.weather.gov) for Romeville (30.069, -90.827). Updated through the day.
Growing snapshot for Romeville
Last spring frost
Feb 21
First fall frost
Dec 5
Growing season
291 days
Hardiness zone
9a
More local growing data for Romeville: nearby ZIP 70723 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Convent
Gramercy
Grand Point
Hester
Kraemer
Lutcher
Moonshine
North Vacherie
Paulina
Pleasure Bend
South Vacherie
St. James
Union
Welcome
Climate data from the nearest NOAA station, Donaldsonville 4 Sw, La (11.2 mi from Romeville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.