Louisiana weather in September
One place stands in for Louisiana here — these are New Orleans's numbers, not a statewide average.
Based on 1 weather station, in New Orleans. One station — New Orleans speaks for the humid southeast corner; northern Louisiana runs a few degrees more extreme in both directions.
New Orleans & the Delta
Highs near 87°, nights around 76°, and 4.6 in of rain in a typical September.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| New Orleans | 87° / 76° | 6 | Still summer, though the rain finally lets up. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.