New Sarpy, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Sarpy, a community in St. Charles County, Louisiana.
Today
81°F
Chance Rain Showers then Mostly Sunny
A chance of rain showers before noon. Mostly sunny. High near 81, with temperatures falling to around 78 in the afternoon. West wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for New Sarpy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Chance Rain Showers then Mostly Sunny | 5 mph W | 27% |
| Tonight | 61°F | Mostly Clear | 0 to 5 mph N | 0% |
| Thursday | 80°F | Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 63°F | Partly Cloudy | 0 to 5 mph NW | 4% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph N | 6% |
| Friday Night | 59°F | Mostly Clear | 0 to 10 mph N | 1% |
| Saturday | 74°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 54°F | Partly Cloudy | 5 to 10 mph N | 2% |
| Sunday | 68°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph N | 15% |
| Sunday Night | 51°F | Partly Cloudy | 5 mph N | 5% |
| Monday | 69°F | Sunny | 0 to 10 mph N | 7% |
| Monday Night | 51°F | Mostly Clear | 0 to 5 mph N | 5% |
| Tuesday | 72°F | Sunny | 0 to 5 mph NE | 5% |
| Tuesday Night | 52°F | Partly Cloudy | 0 mph | 4% |
Forecast source: National Weather Service (api.weather.gov) for New Sarpy (29.979, -90.383). Updated through the day.
Growing snapshot for New Sarpy
Last spring frost
Jan 30
First fall frost
Dec 31
Growing season
333 days
Hardiness zone
9b
More local growing data for New Sarpy: nearby ZIP 70047 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Ama
Bayou Gauche
Boutte
Des Allemands
Destrehan
Hahnville
Killona
Luling
Montz
Norco
Paradis
St. Rose
Taft
Climate data from the nearest NOAA station, New Orleans Intl Ap, La (6.3 mi from New Sarpy). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.