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Canada weather

Weather in Joliette for September 2025

Your guide to Joliette weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Joliette is slightly cooler than the historical average by -1.7 °C.

  • The forecast for the next days in Joliette predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in Joliette at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.6 °C by the end of September.

    • Rain 🌧️

  • With an average of 2 rainy days, Joliette experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/8°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Joliette Weather September

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

Temperatures trend during September in Joliette

See the weather trend as well as the moving average line

September weather in Joliette day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /10° 2.3 mm 6
2 Sept. Cloudy
Cloudy
 22° /11° 0.1 mm 5
3 Sept. Mist
Mist
 24° /12° 0 mm 6
4 Sept. Fog
Fog
 25° /13° 6.8 mm 6
5 Sept. Fog
Fog
 25° /14° 4.1 mm 6
6 Sept. Fog
Fog
 24° /15° 0 mm 6
7 Sept. Light rain shower
Light rain shower
 22° /13° 5 mm 5
8 Sept. Light rain shower
Light rain shower
 18° /10° 4.6 mm 5
9 Sept. Sunny
Sunny
 20° /7° 0 mm 5
10 Sept. Patchy light rain
Patchy light rain
 21° /9° 0.8 mm 5
11 Sept. Cloudy
Cloudy
 21° /11° 0.4 mm 6
12 Sept. Overcast
Overcast
 20° /10° 0.1 mm 5
13 Sept. Moderate rain
Moderate rain
 21° /11° 7.4 mm 5
14 Sept. Mist
Mist
 20° /11° 0 mm 5
15 Sept. Partly cloudy
Partly cloudy
 22° /9° 0 mm 5
16 Sept. Sunny
Sunny
 25° /11° 0 mm 1.2
17 Sept. Sunny
Sunny
 26° /12° 0 mm 1.2
18 Sept. Partly cloudy
Partly cloudy
 23° /13° 0 mm 1.1
19 Sept. Sunny
Sunny
 16° /4° 0 mm 0.9
20 Sept. Sunny
Sunny
 17° /0° 0 mm 0
21 Sept. Patchy rain possible
Patchy rain possible
 21° /3° 0.2 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 22° /14° 0.9 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 29° /15° 0.1 mm 5
24 Sept. Sunny
Sunny
 25° /12° 0 mm 5
25 Sept. Sunny
Sunny
 20° /7° 0 mm 4
26 Sept. Sunny
Sunny
 15° /2° 0 mm 3
27 Sept. Sunny
Sunny
 17° /4° 0 mm 3
28 Sept. Sunny
Sunny
 21° /4° 0 mm 4
29 Sept. Sunny
Sunny
 18° /5° 0 mm 4
30 Sept. Mist
Mist
 21° /9° 0 mm 5
Next
Important Notice
Our weather forecast for Joliette 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 Joliette forecast closer to your planned date for the most up-to-date weather information.
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Joliette in September - FAQ

What are the expected maximum and minimum temperatures in Joliette during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Joliette during September?
Significant rainfall exceeding 314.3 mm is expected in Joliette during September, occurring over more than 2 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Joliette during September?
The average wind speed in Joliette during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Joliette

Explore the daily rainfall trends and prepare for Joliettes September weather 💧

UV exposure in Joliette during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Joliette?

Get accurate weather forecasts for Joliette, located at latitude 46.016 and longitude -73.424. Stay updated with localized weather information tailored for Joliette.

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