September weather forecast and climate
New Orleans, LA

Commuter buses on the street in New Orleans, Louisiana with a view of the city buildings, and palm trees along the roadsides
Commuter buses on the street in New Orleans, Louisiana with a view of the city buildings, and palm trees along the roadsides
Average temperature in September - New Orleans, LA
  • Average high temperature in September: 87.5°F

Warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (62.1°F).

  • Average low temperature in September: 72°F

Months with the highest average low temperature are July and August (75.3°F).
The coldest month (with the lowest average low temperature) is January (44.7°F).

Average humidity in September - New Orleans, LA
  • Average humidity in September: 77.8%

The month with the highest relative humidity is August (79.4%).
The month with the lowest relative humidity is March (72.9%).

Average rainfall in September - New Orleans, LA
  • Average rainfall in September: 5"

The wettest month (with the highest rainfall) is June (8.1").
The driest month (with the lowest rainfall) is October (3.5").

Average rainfall days in September - New Orleans, LA
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is July (13.6 days).
The month with the lowest number of rainy days is April (6.9 days).

Average daylight in September / Average sunshine in September - New Orleans, LA
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 7.6h

The month with most sunshine is June (Average sunshine: 9.1h).
The month with least sunshine is January (Average sunshine: 4.9h).

Average UV index in September - New Orleans, LA
  • Average UV index in September: 9

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 4).

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