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Weather in Greater Sudbury for September 2025

Your guide to Greater Sudbury weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Greater Sudbury is cooler than usual, with temperatures averaging 17.6 °C, this is -3.5 °C below the typical seasonal average.

  • The forecast for the next days in Greater Sudbury predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in Greater Sudbury at the beginning of September is 21.7 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.6 °C by the end of September.

    • Rain 🌧️

  • Greater Sudbury experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 87.4 mm.

    • More

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

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/10°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Greater Sudbury Weather September

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

Temperatures trend during September in Greater Sudbury

See the weather trend as well as the moving average line

September weather in Greater Sudbury day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 22° /9° 0.7 mm 5
2 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 23° /9° 0.2 mm 5
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 25° /11° 0 mm 6
4 Sept. Fog
Fog
 24° /12° 6.3 mm 5
5 Sept. Fog
Fog
 24° /12° 5.1 mm 5
6 Sept. Fog
Fog
 20° /11° 3.6 mm 5
7 Sept. Light rain shower
Light rain shower
 14° /6° 4.9 mm 3
8 Sept. Overcast
Overcast
 18° /6° 0.1 mm 4
9 Sept. Overcast
Overcast
 20° /7° 0 mm 5
10 Sept. Overcast
Overcast
 22° /8° 0 mm 5
11 Sept. Overcast
Overcast
 20° /11° 0.6 mm 4
12 Sept. Fog
Fog
 21° /8° 7.7 mm 5
13 Sept. Overcast
Overcast
 19° /11° 0.4 mm 5
14 Sept. Overcast
Overcast
 20° /10° 0 mm 1.3
15 Sept. Sunny
Sunny
 23° /7° 0 mm 1.3
16 Sept. Cloudy
Cloudy
 20° /10° 0 mm 1.3
17 Sept. Sunny
Sunny
 27° /12° 0 mm 1.2
18 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 0.1 mm 0
19 Sept. Sunny
Sunny
 18° /7° 0 mm 4
20 Sept. Partly cloudy
Partly cloudy
 18° /5° 0.1 mm 4
21 Sept. Moderate rain
Moderate rain
 14° /10° 6.4 mm 3
22 Sept. Partly cloudy
Partly cloudy
 15° /7° 0.1 mm 4
23 Sept. Sunny
Sunny
 19° /4° 0 mm 4
24 Sept. Sunny
Sunny
 23° /9° 0 mm 4
25 Sept. Partly cloudy
Partly cloudy
 26° /11° 0 mm 5
26 Sept. Sunny
Sunny
 21° /6° 0 mm 4
27 Sept. Sunny
Sunny
 27° /12° 0 mm 5
28 Sept. Sunny
Sunny
 20° /8° 0 mm 5
29 Sept. Mist
Mist
 21° /8° 0 mm 5
30 Sept. Fog
Fog
 20° /10° 0 mm 5
Next
Important Notice
Our weather forecast for Greater Sudbury 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 Greater Sudbury forecast closer to your planned date for the most up-to-date weather information.
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Greater Sudbury in September - FAQ

What are the expected maximum and minimum temperatures in Greater Sudbury during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Greater Sudbury during September?
Moderate rainfall is anticipated in Greater Sudbury during September, with a total of 87.4 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Greater Sudbury during September?
The average wind speed in Greater Sudbury during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Greater Sudbury

Explore the daily rainfall trends and prepare for Greater Sudburys September weather 💧

UV exposure in Greater Sudbury during September

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

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Get accurate weather forecasts for Greater Sudbury, located at latitude 46.49 and longitude -80.99. Stay updated with localized weather information tailored for Greater Sudbury.

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