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Montérégie (Brossard)
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Canada weather

Weather in Montérégie for September 2026

Your guide to Montérégie weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Montérégie at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °C by the end of September.

    • Rain 🌧️

  • Montérégie experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 175 mm.

    • More

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Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Montérégie Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
25°
2
Mist
23°
3
Mist
24°
4
Partly cloudy
26°
5
Fog
26°
6
Fog
25°
7
Light rain shower
24°
8
Light rain shower
20°
9
Overcast
21°
10
Light rain shower
21°
11
Overcast
22°
12
Overcast
23°
13
Light rain shower
20°
14
Overcast
21°
15
Mist
23°
16
Overcast
25°
17
Partly cloudy
26°
18
Light rain shower
25°
19
Overcast
22°
20
Cloudy
20°
21
Mist
22°
22
Mist
21°
23
Mist
21°
24
Cloudy
23°
25
Moderate or heavy rain shower
18°
26
Partly cloudy
20°
27
Mist
21°
28
Mist
22°
29
Mist
22°
30
Mist
21°

Temperatures trend during September in Montérégie

See the weather trend as well as the moving average line

September weather in Montérégie day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 25° /11° 1 mm 6
2 Sept. Mist
Mist
 23° /13° 0 mm 5
3 Sept. Mist
Mist
 24° /13° 0 mm 6
4 Sept. Partly cloudy
Partly cloudy
 26° /14° 5.4 mm 7
5 Sept. Fog
Fog
 26° /15° 12.1 mm 6
6 Sept. Fog
Fog
 25° /16° 16.6 mm 5
7 Sept. Light rain shower
Light rain shower
 24° /13° 6.1 mm 5
8 Sept. Light rain shower
Light rain shower
 20° /10° 11.8 mm 5
9 Sept. Overcast
Overcast
 21° /8° 0 mm 5
10 Sept. Light rain shower
Light rain shower
 21° /11° 5.1 mm 5
11 Sept. Overcast
Overcast
 22° /12° 3.8 mm 5
12 Sept. Overcast
Overcast
 23° /10° 0.4 mm 5
13 Sept. Light rain shower
Light rain shower
 20° /12° 7.1 mm 5
14 Sept. Overcast
Overcast
 21° /12° 0.5 mm 5
15 Sept. Mist
Mist
 23° /11° 0 mm 6
16 Sept. Overcast
Overcast
 25° /12° 0 mm 6
17 Sept. Partly cloudy
Partly cloudy
 26° /13° 0 mm 6
18 Sept. Light rain shower
Light rain shower
 25° /14° 0.3 mm 6
19 Sept. Overcast
Overcast
 22° /12° 8.8 mm 5
20 Sept. Cloudy
Cloudy
 20° /9° 0 mm 5
21 Sept. Mist
Mist
 22° /7° 0 mm 5
22 Sept. Mist
Mist
 21° /9° 0.6 mm 5
23 Sept. Mist
Mist
 21° /12° 4.1 mm 5
24 Sept. Cloudy
Cloudy
 23° /11° 0 mm 5
25 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /11° 36.6 mm 4
26 Sept. Partly cloudy
Partly cloudy
 20° /10° 62.2 mm 5
27 Sept. Mist
Mist
 21° /7° 0 mm 5
28 Sept. Mist
Mist
 22° /10° 0 mm 5
29 Sept. Mist
Mist
 22° /9° 0 mm 5
30 Sept. Mist
Mist
 21° /9° 0 mm 5
Next
Important Notice
Our weather forecast for Montérégie 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 Montérégie forecast closer to your planned date for the most up-to-date weather information.
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Montérégie in September - FAQ

What are the expected maximum and minimum temperatures in Montérégie 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 Montérégie during September?
Significant rainfall exceeding 175 mm is expected in Montérégie during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Montérégie during September?
The average wind speed in Montérégie during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Montérégie

Explore the daily rainfall trends and prepare for Montérégies September weather 💧
Typically, Montérégie has 9 rainy days in September with a total of 175 mm of rainfall.

UV exposure in Montérégie during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Montérégie
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BeloeilBouchervilleBrossardChâteauguayGranbyLongueuilSaint-HyacintheSaint-LazareSorel-TracyWarden
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Location coordinates Where is Montérégie?

Get accurate weather forecasts for Montérégie, located at latitude 45.45 and longitude -73.466. Stay updated with localized weather information tailored for Montérégie.

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