Louisiana (New Orleans)
September
Weather in Louisiana for September 2025
Your guide to Louisiana weather in September - trends and predictions
So far, September 2025 in Louisiana is slightly warmer than the historical average by 1.2 °F.
The forecast for the next days in Louisiana predicts temperatures to be around 32 °F, close to the historical average.
In general, the average temperature in Louisiana at the beginning of September is 31.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.9 °F by the end of September.
Louisiana in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 150.5 mm.
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Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
32°/24°
Temperatures
17 km/h
Avg max wind
71 %
Avg humidity
Louisiana Weather September
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What’s the Weather Like in Louisiana This September?
Discover the average temperatures and weather trends across Louisiana’s cities this September.
Temperatures trend during September in Louisiana
See the weather trend as well as the moving average line
September weather in Louisiana day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 31° /25° | 1.4 mm | 7 | |
| Sept. 2 |  Moderate or heavy rain shower | 31° /24° | 3.4 mm | 7 | |
| Sept. 3 | Light rain shower | 33° /24° | 0.5 mm | 7 | |
| Sept. 4 | Patchy rain possible | 33° /25° | 3.4 mm | 7 | |
| Sept. 5 |  Cloudy | 31° /24° | 5.9 mm | 7 | |
| Sept. 6 | Patchy rain possible | 31° /24° | 6.6 mm | 7 | |
| Sept. 7 |  Fog | 32° /24° | 25.1 mm | 7 | |
| Sept. 8 |  Thundery outbreaks possible | 32° /23° | 0.6 mm | 8 | |
| Sept. 9 |  Sunny | 32° /23° | 1.3 mm | 8 | |
| Sept. 10 | Sunny | 32° /24° | 16.3 mm | 8 | |
| Sept. 11 | Thundery outbreaks possible | 31° /24° | 20.5 mm | 7 | |
| Sept. 12 | Cloudy | 32° /23° | 0.5 mm | 7 | |
| Sept. 13 | Sunny | 34° /23° | 1 mm | 8 | |
| Sept. 14 | Cloudy | 33° /23° | 0.2 mm | 7 | |
| Sept. 15 | Sunny | 35° /26° | 0 mm | 1.8 | |
| Sept. 16 |  Partly cloudy | 33° /24° | 0 mm | 2 | |
| Sept. 17 | Partly cloudy | 35° /24° | 0 mm | 2 | |
| Sept. 18 | Sunny | 32° /24° | 0 mm | 2 | |
| Sept. 19 | Sunny | 32° /24° | 0 mm | 0 | |
| Sept. 20 | Sunny | 33° /24° | 0 mm | 7 | |
| Sept. 21 | Sunny | 33° /25° | 0 mm | 7 | |
| Sept. 22 | Sunny | 32° /24° | 0 mm | 7 | |
| Sept. 23 | Patchy rain possible | 30° /24° | 0.4 mm | 6 | |
| Sept. 24 | Sunny | 31° /24° | 0 mm | 7 | |
| Sept. 25 | Patchy rain possible | 26° /24° | 1.6 mm | 5 | |
| Sept. 26 | Partly cloudy | 31° /22° | 0 mm | 7 | |
| Sept. 27 | Partly cloudy | 31° /23° | 0.1 mm | 7 | |
| Sept. 28 | Patchy rain possible | 32° /23° | 1.3 mm | 6 | |
| Sept. 29 | Patchy rain possible | 34° /22° | 1.2 mm | 8 | |
| Sept. 30 | Sunny | 31° /23° | 0 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Louisiana 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 Louisiana forecast closer to your planned date for the most up-to-date weather information.
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Louisiana in September - FAQ
What are the expected maximum and minimum temperatures in Louisiana 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 Louisiana during September?
Significant rainfall exceeding 150.5 mm is expected in Louisiana during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Louisiana during September?
The average wind speed in Louisiana during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Louisiana
Explore the daily rainfall trends and prepare for Louisianas September weather 💧
UV exposure in Louisiana during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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