Harahan, LA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harahan, a city in Jefferson County, Louisiana.
Today
94°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny. High near 94, with temperatures falling to around 92 in the afternoon. Northwest wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast for Harahan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 15% |
| Tonight | 78°F | Mostly Clear | 5 mph SW | 7% |
| Wednesday | 95°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 34% |
| Wednesday Night | 78°F | Mostly Clear | 0 to 5 mph SW | 10% |
| Thursday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 31% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph SE | 31% |
| Friday | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph E | 26% |
| Friday Night | 78°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 26% |
| Saturday | 92°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 35% |
| Saturday Night | 79°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 35% |
| Sunday | 92°F | Showers And Thunderstorms Likely | 0 to 10 mph E | 58% |
| Sunday Night | 79°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 58% |
| Monday | 92°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 63% |
| Monday Night | 78°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 63% |
Forecast source: National Weather Service (api.weather.gov) for Harahan (29.936, -90.203). Updated through the day.
Growing snapshot for Harahan
Last spring frost
Jan 30
First fall frost
Dec 31
Growing season
333 days
Hardiness zone
9b
More local growing data for Harahan: nearby ZIP 70123 weather · frost dates · planting calendar · Louisiana frost dates
Nearby towns & communities
Avondale
Barataria
Belle Chasse
Bridge City
Elmwood
Estelle
Grand Isle
Gretna
Harvey
Jean Lafitte
Jefferson
Kenner
Lafitte
Metairie
New Orleans Station
River Ridge
Terrytown
Timberlane
Waggaman
Woodmere
Climate data from the nearest NOAA station, New Orleans Intl Ap, La (4 mi from Harahan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.