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Canada weather

Weather in Corner Brook for September 2025

Your guide to Corner Brook weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Corner Brook is slightly cooler than the historical average by -0.8 °C.

  • Expect cooler weather in the next days in Corner Brook with the forecast suggesting a temperature of 16 °C, lower than the historical average.

  • In general, the average temperature in Corner Brook at the beginning of September is 20.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.6 °C by the end of September.

    • Rain 🌧️

  • Corner Brook in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 102.5 mm.

    • More

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

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/8°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
84 %
Avg humidity

Corner Brook Weather September

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

Temperatures trend during September in Corner Brook

See the weather trend as well as the moving average line

September weather in Corner Brook day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Fog
Fog
 18° /7° 0.5 mm 4
2 Sept. Sunny
Sunny
 21° /8° 1.1 mm 5
3 Sept. Cloudy
Cloudy
 18° /7° 1.3 mm 4
4 Sept. Cloudy
Cloudy
 19° /7° 0.6 mm 5
5 Sept. Mist
Mist
 23° /9° 0 mm 5
6 Sept. Light rain shower
Light rain shower
 25° /13° 0.3 mm 6
7 Sept. Light rain shower
Light rain shower
 21° /14° 2.5 mm 5
8 Sept. Fog
Fog
 20° /11° 10.3 mm 5
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /9° 3.2 mm 4
10 Sept. Fog
Fog
 18° /8° 0.3 mm 4
11 Sept. Heavy rain
Heavy rain
 16° /9° 7.2 mm 3
12 Sept. Fog
Fog
 14° /7° 2.6 mm 4
13 Sept. Mist
Mist
 18° /6° 0.1 mm 4
14 Sept. Light rain shower
Light rain shower
 16° /9° 0.7 mm 4
15 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /8° 10.6 mm 3
16 Sept. Cloudy
Cloudy
 15° /9° 0 mm 0.9
17 Sept. Cloudy
Cloudy
 19° /9° 0 mm 1.1
18 Sept. Cloudy
Cloudy
 21° /14° 0 mm 0.9
19 Sept. Heavy rain
Heavy rain
 16° /5° 21.2 mm 0.1
20 Sept. Patchy rain possible
Patchy rain possible
 9° /2° 2.2 mm 0
21 Sept. Patchy rain possible
Patchy rain possible
 12° /4° 0.1 mm 2
22 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 2.6 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 14° /5° 4.1 mm 3
24 Sept. Sunny
Sunny
 13° /3° 0 mm 3
25 Sept. Sunny
Sunny
 16° /3° 0 mm 3
26 Sept. Partly cloudy
Partly cloudy
 18° /4° 0 mm 4
27 Sept. Partly cloudy
Partly cloudy
 17° /4° 0 mm 3
28 Sept. Sunny
Sunny
 17° /6° 0 mm 4
29 Sept. Partly cloudy
Partly cloudy
 20° /8° 0 mm 4
30 Sept. Fog
Fog
 15° /6° 1.5 mm 4
Next
Important Notice
Our weather forecast for Corner Brook 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 Corner Brook forecast closer to your planned date for the most up-to-date weather information.
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Corner Brook in September - FAQ

What are the expected maximum and minimum temperatures in Corner Brook during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Corner Brook during September?
Significant rainfall exceeding 102.5 mm is expected in Corner Brook during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Corner Brook during September?
The average wind speed in Corner Brook during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Corner Brook

Explore the daily rainfall trends and prepare for Corner Brooks September weather 💧

UV exposure in Corner Brook during September

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

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Location coordinates Where is Corner Brook?

Get accurate weather forecasts for Corner Brook, located at latitude 48.95 and longitude -57.952. Stay updated with localized weather information tailored for Corner Brook.

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