Greater Sudbury
September
Weather in Greater Sudbury for September 2025
Your guide to Greater Sudbury weather in September - trends and predictions
In general, the average temperature in Greater Sudbury at the beginning of September is 23.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.9 °C by the end of September.
Greater Sudbury sees moderate rainfall in September, averaging 8 rainy days.
- New! Chat with our AI weatherman - it’s amazing and free.
22
Dry days
8
Rainy days
0
Snow days
22°/9°
Temperatures
13 km/h
Avg max wind
73 %
Avg humidity
Greater Sudbury in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  24° | 3 26° | 4 28° | 5 29° | 6 23° | 7  15° |
| 8  19° | 9  21° | 10 22° | 11 21° | 12 23° | 13 19° | 14  23° |
| 15 24° | 16 25° | 17  22° | 18  22° | 19 21° | 20 23° | 21 22° |
| 22 21° | 23 20° | 24 19° | 25 19° | 26 19° | 27 21° | 28 20° |
| 29 21° | 30 20° |
You can click on date
Access Greater Sudbury weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Greater Sudbury
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 21° /9° | 1 mm | 5 | |
| 2 Sept. | Thundery outbreaks possible | 24° /10° | 0.3 mm | 6 | |
| 3 Sept. | Thundery outbreaks possible | 26° /11° | 0.1 mm | 6 | |
| 4 Sept. | Fog | 28° /14° | 0 mm | 6 | |
| 5 Sept. | Fog | 29° /14° | 0.3 mm | 6 | |
| 6 Sept. | Fog | 23° /12° | 5.3 mm | 6 | |
| 7 Sept. | Light rain shower | 15° /6° | 5.3 mm | 4 | |
| 8 Sept. | Overcast | 19° /6° | 0.2 mm | 5 | |
| 9 Sept. | Partly cloudy | 21° /6° | 0 mm | 6 | |
| 10 Sept. | Overcast | 22° /6° | 0 mm | 6 | |
| 11 Sept. | Overcast | 21° /11° | 0.9 mm | 5 | |
| 12 Sept. | Fog | 23° /9° | 11.5 mm | 5 | |
| 13 Sept. | Overcast | 19° /10° | 0.6 mm | 5 | |
| 14 Sept. | Sunny | 23° /9° | 0 mm | 6 | |
| 15 Sept. | Mist | 24° /10° | 0 mm | 6 | |
| 16 Sept. | Mist | 25° /11° | 0 mm | 6 | |
| 17 Sept. | Moderate rain | 22° /10° | 4.6 mm | 5 | |
| 18 Sept. | Cloudy | 22° /9° | 0 mm | 5 | |
| 19 Sept. | Sunny | 21° /7° | 0 mm | 6 | |
| 20 Sept. | Mist | 23° /8° | 0 mm | 6 | |
| 21 Sept. | Cloudy | 22° /12° | 6 mm | 5 | |
| 22 Sept. | Fog | 21° /13° | 11.2 mm | 5 | |
| 23 Sept. | Moderate rain | 20° /10° | 37.3 mm | 5 | |
| 24 Sept. | Fog | 19° /11° | 0 mm | 4 | |
| 25 Sept. | Sunny | 19° /11° | 1 mm | 5 | |
| 26 Sept. | Patchy rain possible | 19° /10° | 1.6 mm | 5 | |
| 27 Sept. | Mist | 21° /9° | 0 mm | 5 | |
| 28 Sept. | Sunny | 20° /8° | 0 mm | 5 | |
| 29 Sept. | Mist | 21° /8° | 0 mm | 5 | |
| 30 Sept. | 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.
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 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Greater Sudbury during September?
In September, Greater Sudbury can expect light to moderate rainfall, totaling 50 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Greater Sudbury during September?
The average wind speed in Greater Sudbury during September is 13 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 ☀️
Quick links
You are here
Where is Greater Sudbury?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.
Found a mistake?
We appreciate your attention to details. Tell us here.