Baton Rouge (LA)
September
Weather in Baton Rouge, Louisiana for September 2026
Your guide to Baton Rouge weather in September - trends and predictions
So far, September 2026 in Baton Rouge is slightly warmer than the historical average by 1.3 °F.
The forecast for the upcoming days in Baton Rouge predicts a temperature of 35.1 °F, which is slightly above the historical average.
In general, the average temperature in Baton Rouge at the beginning of September is 33.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 32.1 °F by the end of September.
Baton Rouge in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 172.1 mm.
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Temperatures
Rain 🌧️
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14
Dry days
16
Rainy days
0
Snow days
32°/22°
Temperatures
14 km/h
Avg max wind
67 %
Avg humidity
Baton Rouge Weather September
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Temperatures trend during September in Baton Rouge
See the weather trend as well as the moving average line
September weather in Baton Rouge day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 34° /23° | 0.5 mm | 7 | |
| Sept. 2 | Patchy rain possible | 34° /23° | 0.4 mm | 7 | |
| Sept. 3 | Patchy rain possible | 35° /23° | 24.7 mm | 9 | |
| Sept. 4 | Light rain shower | 32° /23° | 6 mm | 7 | |
| Sept. 5 |  Cloudy | 32° /23° | 6.2 mm | 6 | |
| Sept. 6 |  Sunny | 34° /22° | 6.8 mm | 8 | |
| Sept. 7 |  Thundery outbreaks possible | 33° /22° | 1.3 mm | 8 | |
| Sept. 8 | Sunny | 33° /20° | 2 mm | 8 | |
| Sept. 9 | Sunny | 33° /20° | 0.6 mm | 8 | |
| Sept. 10 | Patchy rain possible | 32° /24° | 1.7 mm | 8.7 | |
| Sept. 11 | Sunny | 35° /24° | 2.1 mm | 8.7 | |
| Sept. 12 | Sunny | 35° /24° | 1.6 mm | 9 | |
| Sept. 13 | Sunny | 37° /24° | 0.2 mm | 9.3 | |
| Sept. 14 | Sunny | 36° /25° | 0.3 mm | 9 | |
| Sept. 15 |  Partly cloudy | 36° /25° | 0 mm | 9 | |
| Sept. 16 | Cloudy | 35° /25° | 1.6 mm | 9 | |
| Sept. 17 | Patchy rain possible | 37° /25° | 1.2 mm | 9 | |
| Sept. 18 | Sunny | 39° /25° | 9.9 mm | 9 | |
| Sept. 19 | Sunny | 36° /24° | 0.2 mm | 9 | |
| Sept. 20 | Sunny | 34° /19° | 0 mm | 8 | |
| Sept. 21 | Sunny | 30° /21° | 0.1 mm | 7 | |
| Sept. 22 | Partly cloudy | 35° /22° | 0 mm | 8 | |
| Sept. 23 | Sunny | 35° /22° | 3.9 mm | 9 | |
| Sept. 24 | Patchy rain possible | 33° /23° | 0.2 mm | 7 | |
| Sept. 25 |  Moderate or heavy rain shower | 31° /23° | 6.1 mm | 7 | |
| Sept. 26 |  Patchy light drizzle | 31° /21° | 2.1 mm | 7 | |
| Sept. 27 | Patchy rain possible | 31° /19° | 0 mm | 7 | |
| Sept. 28 | Partly cloudy | 33° /19° | 0 mm | 8 | |
| Sept. 29 |  Mist | 33° /22° | 0 mm | 8 | |
| Sept. 30 |  Overcast | 33° /21° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Baton Rouge 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 Baton Rouge forecast closer to your planned date for the most up-to-date weather information.
Change Month
Baton Rouge in September - FAQ
What are the expected maximum and minimum temperatures in Baton Rouge during September?
During September, expect a variety of temperatures with highs around 32° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Baton Rouge during September?
Significant rainfall exceeding 172.1 mm is expected in Baton Rouge during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Baton Rouge during September?
The average wind speed in Baton Rouge during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Baton Rouge
Explore the daily rainfall trends and prepare for Baton Rouges September weather 💧
Typically, Baton Rouge has 16 rainy days in September with a total of 172.1 mm of rainfall.
UV exposure in Baton Rouge during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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