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Canada weather

Weather in Châteauguay for September 2027

Your guide to Châteauguay weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Châteauguay at the beginning of September is 24.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.

    • Rain 🌧️

  • Châteauguay experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 192.2 mm.

    • More

  • Is September a good time to visit Châteauguay? check out the best time to travel to Châteauguay page.

  • ✨ Is September a good time to visit Châteauguay? – Ask the AI Weatherman

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Châteauguay Weather September

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

Temperatures trend during September in Châteauguay

See the weather trend as well as the moving average line

September weather in Châteauguay day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 24° /12° 2.1 mm 5
2 Sept. Moderate rain
Moderate rain
 24° /14° 17.7 mm 5
3 Sept. Moderate rain
Moderate rain
 24° /15° 22.8 mm 6
4 Sept. Light rain
Light rain
 26° /15° 7.4 mm 6.8
5 Sept. Light rain
Light rain
 24° /15° 8.4 mm 5
6 Sept. Light rain
Light rain
 24° /16° 7.2 mm 6
7 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 23° /13° 6.8 mm 5
8 Sept. Moderate rain
Moderate rain
 20° /12° 19.4 mm 4
9 Sept. Light rain
Light rain
 21° /10° 4.5 mm 4
10 Sept. Light rain
Light rain
 21° /12° 6.9 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 1.5 mm 6
12 Sept. Mist
Mist
 23° /12° 0.7 mm 6
13 Sept. Moderate rain
Moderate rain
 20° /14° 5.6 mm 4
14 Sept. Overcast
Overcast
 21° /13° 0.3 mm 5
15 Sept. Partly cloudy
Partly cloudy
 23° /12° 0 mm 5
16 Sept. Overcast
Overcast
 24° /14° 0.1 mm 5
17 Sept. Overcast
Overcast
 24° /13° 0 mm 5
18 Sept. Fog
Fog
 23° /13° 0.4 mm 5.5
19 Sept. Light rain
Light rain
 21° /12° 6.1 mm 5
20 Sept. Cloudy
Cloudy
 20° /10° 0.2 mm 4
21 Sept. Overcast
Overcast
 20° /9° 0 mm 5
22 Sept. Overcast
Overcast
 20° /9° 0.8 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 1.4 mm 5
24 Sept. Sunny
Sunny
 21° /12° 0 mm 5
25 Sept. Heavy rain
Heavy rain
 19° /12° 31.6 mm 4
26 Sept. Heavy rain
Heavy rain
 21° /12° 39.7 mm 4
27 Sept. Mist
Mist
 20° /9° 0.2 mm 4
28 Sept. Mist
Mist
 20° /11° 0.3 mm 4
29 Sept. Mist
Mist
 21° /10° 0 mm 4.6
30 Sept. Mist
Mist
 20° /11° 0 mm 4
Next
Important Notice
Our weather forecast for Châteauguay 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 Châteauguay forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Châteauguay in September - FAQ

What are the expected maximum and minimum temperatures in Châteauguay 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 Châteauguay during September?
Significant rainfall exceeding 192.2 mm is expected in Châteauguay during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Châteauguay during September?
The average wind speed in Châteauguay during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Châteauguay

Explore the daily rainfall trends and prepare for Châteauguays September weather 💧
Typically, Châteauguay has 7 rainy days in September with a total of 192.2 mm of rainfall.

UV exposure in Châteauguay during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Châteauguay?

Get accurate weather forecasts for Châteauguay, located at latitude 45.383 and longitude -73.749. Stay updated with localized weather information tailored for Châteauguay.

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