Laval
September
Weather in Laval for September 2025
Your guide to Laval weather in September - trends and predictions
In general, the average temperature in Laval at the beginning of September is 25 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.7 °C by the end of September.
Laval experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 123.9 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
22°/12°
Temperatures
14 km/h
Avg max wind
73 %
Avg humidity
Laval in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  23° | 2 22° | 3 24° | 4 27° | 5 27° | 6 28° | 7  24° |
| 8  19° | 9  20° | 10  20° | 11  22° | 12 24° | 13 22° | 14 21° |
| 15 25° | 16 24° | 17  26° | 18 24° | 19 23° | 20 23° | 21 21° |
| 22 21° | 23 20° | 24 22° | 25  18° | 26 19° | 27 20° | 28 21° |
| 29 21° | 30 24° |
You can click on date
Access Laval weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Laval
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 23° /11° | 3.5 mm | 5 | |
| 2 Sept. | Mist | 22° /11° | 0 mm | 5 | |
| 3 Sept. | Fog | 24° /12° | 0 mm | 6 | |
| 4 Sept. | Mist | 27° /15° | 0 mm | 7 | |
| 5 Sept. | Mist | 27° /17° | 0 mm | 7 | |
| 6 Sept. | Mist | 28° /18° | 0.1 mm | 6 | |
| 7 Sept. | Patchy light rain with thunder | 24° /13° | 9.5 mm | 5 | |
| 8 Sept. | Light rain shower | 19° /12° | 12.6 mm | 5 | |
| 9 Sept. | Cloudy | 20° /8° | 0 mm | 5 | |
| 10 Sept. | Moderate rain | 20° /11° | 3 mm | 5 | |
| 11 Sept. | Overcast | 22° /11° | 1.6 mm | 6 | |
| 12 Sept. | Overcast | 24° /13° | 1.7 mm | 6 | |
| 13 Sept. | Moderate rain | 22° /13° | 6.9 mm | 6 | |
| 14 Sept. | Overcast | 21° /12° | 0 mm | 6 | |
| 15 Sept. | Mist | 25° /12° | 0 mm | 6 | |
| 16 Sept. | Overcast | 24° /15° | 0 mm | 6 | |
| 17 Sept. | Partly cloudy | 26° /13° | 0.1 mm | 7 | |
| 18 Sept. | Light rain shower | 24° /13° | 0.9 mm | 6 | |
| 19 Sept. | Moderate rain | 23° /15° | 6.9 mm | 5 | |
| 20 Sept. | Overcast | 23° /12° | 0 mm | 6 | |
| 21 Sept. | Mist | 21° /9° | 0 mm | 5 | |
| 22 Sept. | Mist | 21° /10° | 0 mm | 5 | |
| 23 Sept. | Overcast | 20° /12° | 0 mm | 5 | |
| 24 Sept. | Partly cloudy | 22° /12° | 0 mm | 6 | |
| 25 Sept. | Sunny | 18° /10° | 16.7 mm | 5 | |
| 26 Sept. | Partly cloudy | 19° /9° | 60.5 mm | 5 | |
| 27 Sept. | Partly cloudy | 20° /9° | 0 mm | 6 | |
| 28 Sept. | Partly cloudy | 21° /11° | 0 mm | 5 | |
| 29 Sept. | Mist | 21° /10° | 0 mm | 5 | |
| 30 Sept. | Mist | 24° /10° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Laval 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 Laval forecast closer to your planned date for the most up-to-date weather information.
Laval in September - FAQ
What are the expected maximum and minimum temperatures in Laval during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Laval during September?
Significant rainfall exceeding 123.9 mm is expected in Laval during September, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Laval during September?
The average wind speed in Laval during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Laval
Explore the daily rainfall trends and prepare for Lavals September weather 💧
UV exposure in Laval during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Laval?Get accurate weather forecasts for Laval, located at latitude 45.57 and longitude -73.692. Stay updated with localized weather information tailored for Laval.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.