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Weather in Greater Sudbury for September 2026

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

    Temperatures

  • So far, September 2026 in Greater Sudbury is slightly warmer than the historical average by 0.9 °C.

  • Expect cooler weather in the next days in Greater Sudbury with the forecast suggesting a temperature of 18.5 °C, lower than the historical average.

  • In general, the average temperature in Greater Sudbury at the beginning of September is 22 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.4 °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 98.5 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
20°/10°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
74 %
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
23°
2
Thundery outbreaks possible
23°
3
Thundery outbreaks possible
25°
4
Fog
23°
5
Fog
23°
6
Fog
20°
7
Light rain shower
17°
8
Patchy rain possible
19°
9
Overcast
21°
10
Overcast
21°
11
Sunny
26°
12
Overcast
23°
13
Overcast
18°
14
Sunny
17°
15
Patchy rain possible
16°
16
Overcast
18°
17
Overcast
14°
18
Sunny
15°
19
Sunny
17°
20
Sunny
19°
21
Sunny
20°
22
Sunny
21°
23
Overcast
20°
24
Overcast
15°
25
Sunny
19°
26
Patchy rain possible
19°
27
Mist
20°
28
Sunny
21°
29
Mist
23°
30
Fog
19°

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
 23° /11° 15 mm 4
2 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 23° /11° 1.8 mm 4
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 25° /11° 0 mm 6
4 Sept. Fog
Fog
 23° /11° 4.7 mm 5
5 Sept. Fog
Fog
 23° /12° 4 mm 5
6 Sept. Fog
Fog
 20° /11° 2.7 mm 5
7 Sept. Light rain shower
Light rain shower
 17° /7° 3.6 mm 4
8 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.5 mm 4
9 Sept. Overcast
Overcast
 21° /9° 3.1 mm 4
10 Sept. Overcast
Overcast
 21° /8° 0 mm 6
11 Sept. Sunny
Sunny
 26° /6° 0 mm 5.4
12 Sept. Overcast
Overcast
 23° /13° 1.4 mm 4.8
13 Sept. Overcast
Overcast
 18° /10° 0.2 mm 4.1
14 Sept. Sunny
Sunny
 17° /6° 0 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 9.3 mm 4
16 Sept. Overcast
Overcast
 18° /11° 0 mm 4
17 Sept. Overcast
Overcast
 14° /9° 4.7 mm 3
18 Sept. Sunny
Sunny
 15° /7° 0.3 mm 5
19 Sept. Sunny
Sunny
 17° /9° 0 mm 5
20 Sept. Sunny
Sunny
 19° /7° 0 mm 5
21 Sept. Sunny
Sunny
 20° /10° 0 mm 5
22 Sept. Sunny
Sunny
 21° /11° 0 mm 6
23 Sept. Overcast
Overcast
 20° /11° 0 mm 5
24 Sept. Overcast
Overcast
 15° /9° 0 mm 4
25 Sept. Sunny
Sunny
 19° /12° 0.6 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 1.1 mm 4
27 Sept. Mist
Mist
 20° /8° 0 mm 4
28 Sept. Sunny
Sunny
 21° /9° 0 mm 5
29 Sept. Mist
Mist
 23° /9° 0 mm 6
30 Sept. Fog
Fog
 19° /9° 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 20° 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 98.5 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 💧
Typically, Greater Sudbury has 10 rainy days in September with a total of 98.5 mm of rainfall.

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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