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Today's maximum temperature in New Orleans is expected to be 7Â°C, while the average maximum temperature in January is 16Â°C. More about New Orleans Weather overview
Key weather averages for New Orleans in March. 1  22. 22Â°C max day temperature. 2  7. 7 hours of sunshine per day. 3  9. 9 days with some rainfall. 4  12. 12Â°C min night temperature. 5  12. 12 hours of daylight per day. 6  0. No heat & humidity. 7  125. 125 mm of monthly rainfall. 8  8. 8 (Very High) UV index.