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United States weather

Weather in New Orleans, Louisiana for September 2025

Your guide to New Orleans weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Meteorological - Air Quality Alert - See hour by hour.

    • Temperatures

  • So far, September 2025 in New Orleans is slightly warmer than the historical average by 1.2 °F.

  • The forecast for the next days in New Orleans predicts temperatures to be around 32 °F, close to the historical average.

  • In general, the average temperature in New Orleans at the beginning of September is 31.7 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 32.1 °F by the end of September.

    • Rain 🌧️

  • New Orleans in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 150.5 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
32°/24°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
71 %
Avg humidity

New Orleans Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
31°
2
Moderate or heavy rain shower
31°
3
Light rain shower
33°
4
Patchy rain possible
33°
5
Cloudy
31°
6
Patchy rain possible
31°
7
Fog
32°
8
Thundery outbreaks possible
32°
9
Sunny
32°
10
Sunny
32°
11
Thundery outbreaks possible
31°
12
Cloudy
32°
13
Sunny
34°
14
Weather Alert Sunny
34°
15
Overcast
32°
16
Overcast
32°
17
Sunny
33°
18
Sunny
32°
19
Patchy rain possible
32°
20
Partly cloudy
31°
21
Sunny
31°
22
Patchy rain possible
31°
23
Sunny
31°
24
Patchy rain possible
31°
25
Patchy rain possible
32°
26
Patchy rain possible
32°
27
Sunny
32°
28
Light rain shower
33°
29
Patchy rain possible
34°
30
Sunny
31°

Temperatures trend during September in New Orleans

See the weather trend as well as the moving average line

September weather in New Orleans day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Patchy rain possible
Patchy rain possible
 31° /25° 1.4 mm 7
Sept. 2 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 3.4 mm 7
Sept. 3 Light rain shower
Light rain shower
 33° /24° 0.5 mm 7
Sept. 4 Patchy rain possible
Patchy rain possible
 33° /25° 3.4 mm 7
Sept. 5 Cloudy
Cloudy
 31° /24° 5.9 mm 7
Sept. 6 Patchy rain possible
Patchy rain possible
 31° /24° 6.6 mm 7
Sept. 7 Fog
Fog
 32° /24° 25.1 mm 7
Sept. 8 Thundery outbreaks possible
Thundery outbreaks possible
 32° /23° 0.6 mm 8
Sept. 9 Sunny
Sunny
 32° /23° 1.3 mm 8
Sept. 10 Sunny
Sunny
 32° /24° 16.3 mm 8
Sept. 11 Thundery outbreaks possible
Thundery outbreaks possible
 31° /24° 20.5 mm 7
Sept. 12 Cloudy
Cloudy
 32° /23° 0.5 mm 7
Sept. 13 Sunny
Sunny
 34° /23° 1 mm 8
Sept. 14 Sunny
Sunny
 34° /25° 0 mm 2
Sept. 15 Overcast
Overcast
 32° /25° 0 mm 2
Sept. 16 Overcast
Overcast
 32° /24° 0 mm 2
Sept. 17 Sunny
Sunny
 33° /24° 0 mm 2
Sept. 18 Sunny
Sunny
 32° /24° 0 mm 0
Sept. 19 Patchy rain possible
Patchy rain possible
 32° /24° 0.2 mm 6
Sept. 20 Partly cloudy
Partly cloudy
 31° /23° 0.1 mm 7
Sept. 21 Sunny
Sunny
 31° /23° 0 mm 7
Sept. 22 Patchy rain possible
Patchy rain possible
 31° /23° 0 mm 6
Sept. 23 Sunny
Sunny
 31° /23° 0 mm 7
Sept. 24 Patchy rain possible
Patchy rain possible
 31° /24° 0.4 mm 6
Sept. 25 Patchy rain possible
Patchy rain possible
 32° /25° 0.8 mm 6
Sept. 26 Patchy rain possible
Patchy rain possible
 32° /25° 0.2 mm 6
Sept. 27 Sunny
Sunny
 32° /25° 0.1 mm 7
Sept. 28 Light rain shower
Light rain shower
 33° /22° 1.1 mm 8
Sept. 29 Patchy rain possible
Patchy rain possible
 34° /22° 1.2 mm 8
Sept. 30 Sunny
Sunny
 31° /23° 0 mm 7
Next
Important Notice
Our weather forecast for New Orleans in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New Orleans forecast closer to your planned date for the most up-to-date weather information.
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New Orleans in September - FAQ

What are the expected maximum and minimum temperatures in New Orleans during September?
During September, expect a variety of temperatures with highs around 32° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in New Orleans during September?
Significant rainfall exceeding 150.5 mm is expected in New Orleans during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in New Orleans during September?
The average wind speed in New Orleans during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in New Orleans

Explore the daily rainfall trends and prepare for New Orleanss September weather 💧

UV exposure in New Orleans during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for New Orleans, located at latitude 29.955 and longitude -90.075. Stay updated with localized weather information tailored for New Orleans.

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