The temperatures in Corner Brook in September are quite cold with temperatures between 8°C and 16°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Corner Brook. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Corner Brook in September 2025.
If you’re planning to visit Corner Brook in the near future, we highly recommend that you review the 14 day weather forecast for Corner Brook before you arrive.
Temperatures
16° / 8°
Rainy Days
9
Snowy Days
0
Dry Days
21
Rainfall
53
mm
Sun Hours
1.3
Hrs
