The temperatures in Trois Rivieres in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Trois Rivieres 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 Trois Rivieres in September 2025.
If you’re planning to visit Trois Rivieres in the near future, we highly recommend that you review the 14 day weather forecast for Trois Rivieres before you arrive.
Temperatures
20° / 10°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
115
mm
Sun Hours
9.7
Hrs
