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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 sees moderate rainfall in September, averaging 8 rainy days.

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Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/12°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Laval in September average weather

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Temperatures trend during September in Laval

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
23° /11° 3.5 mm 5
2 Sept. Mist
Mist
22° /11° 0 mm 5
3 Sept. Fog
Fog
24° /12° 0 mm 6
4 Sept. Mist
Mist
27° /15° 0 mm 7
5 Sept. Mist
Mist
27° /17° 0 mm 7
6 Sept. Mist
Mist
28° /18° 0.1 mm 6
7 Sept. Patchy light rain with thunder
Patchy light rain with thunder
24° /13° 9.5 mm 5
8 Sept. Light rain shower
Light rain shower
19° /12° 12.6 mm 5
9 Sept. Cloudy
Cloudy
20° /8° 0 mm 5
10 Sept. Moderate rain
Moderate rain
20° /11° 3 mm 5
11 Sept. Overcast
Overcast
22° /11° 1.6 mm 6
12 Sept. Overcast
Overcast
24° /13° 1.7 mm 6
13 Sept. Moderate rain
Moderate rain
22° /13° 6.9 mm 6
14 Sept. Overcast
Overcast
21° /12° 0 mm 6
15 Sept. Mist
Mist
25° /12° 0 mm 6
16 Sept. Overcast
Overcast
24° /15° 0 mm 6
17 Sept. Partly cloudy
Partly cloudy
26° /13° 0.1 mm 7
18 Sept. Light rain shower
Light rain shower
24° /13° 0.9 mm 6
19 Sept. Moderate rain
Moderate rain
23° /15° 6.9 mm 5
20 Sept. Overcast
Overcast
23° /12° 0 mm 6
21 Sept. Mist
Mist
21° /9° 0 mm 5
22 Sept. Mist
Mist
21° /10° 0 mm 5
23 Sept. Overcast
Overcast
20° /12° 0 mm 5
24 Sept. Partly cloudy
Partly cloudy
22° /12° 0 mm 6
25 Sept. Sunny
Sunny
18° /10° 16.7 mm 5
26 Sept. Partly cloudy
Partly cloudy
19° /9° 60.5 mm 5
27 Sept. Partly cloudy
Partly cloudy
20° /9° 0 mm 6
28 Sept. Partly cloudy
Partly cloudy
21° /11° 0 mm 5
29 Sept. Mist
Mist
21° /10° 0 mm 5
30 Sept. Mist
Mist
24° /10° 0 mm 6
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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 23° 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?
Moderate rainfall is anticipated in Laval during September, with a total of 69.8 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Laval during September?
The average wind speed in Laval during September is 13 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 ☀️

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Location coordinates 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.

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