New Orleans, Louisiana weather in December

Averages from 2021–2025 (155 days of record).

Average high: 66°F
Average low: 54°F
Rainy days: ~9 per month
Total precipitation: 5.1 in
Warmest recorded: 81°F
Coldest recorded: 26°F

Expect December days in New Orleans, Louisiana to top out around 66°F and cool to about 54°F overnight, with roughly 9 days of measurable rain across the month. In recent years December has ranged from 26°F to 81°F.

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Current New Orleans, Louisiana forecast → · Historical data by Open-Meteo (ERA5).