Lafayette (LA)
September
Weather in Lafayette, Louisiana for September 2026
Your guide to Lafayette weather in September - trends and predictions
So far, September 2026 in Lafayette is slightly warmer than the historical average by 0.7 °F.
The forecast for the upcoming days in Lafayette predicts a temperature of 35.4 °F, which is slightly above the historical average.
In general, the average temperature in Lafayette at the beginning of September is 32.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 33 °F by the end of September.
With an average of 3 rainy days, Lafayette experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
27
Dry days
3
Rainy days
0
Snow days
31°/21°
Temperatures
15 km/h
Avg max wind
72 %
Avg humidity
Lafayette Weather September
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Temperatures trend during September in Lafayette
See the weather trend as well as the moving average line
September weather in Lafayette day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Mist | 31° /23° | 119.2 mm | 4 | |
| Sept. 2 |  Overcast | 32° /24° | 4.7 mm | 5 | |
| Sept. 3 | Mist | 33° /23° | 0 mm | 7 | |
| Sept. 4 | Overcast | 32° /23° | 57.8 mm | 8 | |
| Sept. 5 | Fog | 32° /22° | 37.8 mm | 5 | |
| Sept. 6 | Fog | 32° /22° | 0.1 mm | 9 | |
| Sept. 7 | Overcast | 33° /23° | 0.1 mm | 8 | |
| Sept. 8 |  Sunny | 32° /18° | 0.1 mm | 8 | |
| Sept. 9 | Overcast | 32° /18° | 0.2 mm | 7 | |
| Sept. 10 |  Thundery outbreaks possible | 32° /22° | 79.3 mm | 6 | |
| Sept. 11 |  Partly cloudy | 32° /22° | 3.3 mm | 9 | |
| Sept. 12 | Sunny | 35° /22° | 2.2 mm | 10 | |
| Sept. 13 | Overcast | 33° /23° | 0.3 mm | 9 | |
| Sept. 14 | Sunny | 35° /24° | 1.9 mm | 9.3 | |
| Sept. 15 | Sunny | 36° /24° | 0 mm | 9.2 | |
| Sept. 16 | Sunny | 36° /25° | 0.1 mm | 9 | |
| Sept. 17 | Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 18 | Sunny | 37° /22° | 0 mm | 9 | |
| Sept. 19 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 20 | Sunny | 38° /24° | 0.3 mm | 9 | |
| Sept. 21 | Sunny | 36° /22° | 0.1 mm | 9 | |
| Sept. 22 | Sunny | 34° /21° | 0 mm | 8 | |
| Sept. 23 | Sunny | 34° /19° | 0 mm | 8 | |
| Sept. 24 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 25 | Sunny | 34° /18° | 0 mm | 8 | |
| Sept. 26 | Sunny | 35° /19° | 0 mm | 8 | |
| Sept. 27 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 28 | Partly cloudy | 32° /16° | 0 mm | 8 | |
| Sept. 29 |  Cloudy | 31° /18° | 0 mm | 7 | |
| Sept. 30 | Overcast | 31° /20° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Lafayette 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 Lafayette forecast closer to your planned date for the most up-to-date weather information.
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Lafayette in September - FAQ
What are the expected maximum and minimum temperatures in Lafayette during September?
During September, expect a variety of temperatures with highs around 31° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Lafayette during September?
In September, Lafayette can expect light to moderate rainfall, totaling 23.8 mm across approximately 3 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Lafayette during September?
The average wind speed in Lafayette during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Lafayette
Explore the daily rainfall trends and prepare for Lafayettes September weather 💧
Typically, Lafayette has 3 rainy days in September with a total of 23.8 mm of rainfall.
UV exposure in Lafayette during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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