The temperatures in Joliette in September are usually low and can range between 10°C and 19°C.
You can expect about 3 to 8 days of rain in Joliette during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Joliette in September 2025.
If you’re planning to visit Joliette in the near future, we highly recommend that you review the 14 day weather forecast for Joliette before you arrive.
Temperatures
19° / 10°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
37
mm
Sun Hours
2.3
Hrs
