September in Metairie averages a daily high of 31.9°C with nights around 23.1°C. Expect roughly 9.9 wet days totalling 171.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Metairie is February–April.
Based on NEW ORLEANS AUDUBON, LA US (7.8km), 1995–2024. 24 years of September data.