Will I be cold?
Will I be cold in New Orleans in September?
Verdict
No — No, comfortable.
Lows stay near 73°F — you won't be reaching for the puffer.
Day vs. night
Day
88°F
Hot
Prioritize shade, hydration, and a brim.
Night
73°F
Warm
Still warm enough for a T-shirt after dark.
Why
New Orleans in September averages highs of 88°F, lows of 73°F, 11 rainy days.
You can pack for the daytime temps and not worry about the evening dip.