The temperatures in Shawinigan 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 Shawinigan 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 Shawinigan in September 2025.
If you’re planning to visit Shawinigan in the near future, we highly recommend that you review the 14 day weather forecast for Shawinigan before you arrive.
Temperatures
20° / 10°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
110
mm
Sun Hours
6.4
Hrs
