Algoma (Sault Ste. Marie)
September
Weather in Algoma for September 2025
Your guide to Algoma weather in September - trends and predictions
In general, the average temperature in Algoma at the beginning of September is 23 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 21.3 °C by the end of September.
Algoma sees moderate rainfall in September, averaging 7 rainy days.
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23
Dry days
7
Rainy days
0
Snow days
22°/10°
Temperatures
15 km/h
Avg max wind
74 %
Avg humidity
Algoma in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  23° | 3 26° | 4 28° | 5 28° | 6  21° | 7  14° |
| 8  18° | 9 21° | 10 21° | 11 21° | 12 21° | 13  21° | 14 22° |
| 15 25° | 16 25° | 17  21° | 18 22° | 19 23° | 20 21° | 21 24° |
| 22  21° | 23 21° | 24 20° | 25 20° | 26 20° | 27 22° | 28 22° |
| 29 22° | 30 23° |
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Temperatures trend during September in Algoma
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 21° /9° | 1.4 mm | 5 | |
| 2 Sept. | Thundery outbreaks possible | 23° /10° | 0 mm | 6 | |
| 3 Sept. | Fog | 26° /11° | 0 mm | 6 | |
| 4 Sept. | Fog | 28° /11° | 0 mm | 6 | |
| 5 Sept. | Thundery outbreaks possible | 28° /14° | 3.3 mm | 6 | |
| 6 Sept. | Light rain shower | 21° /12° | 6.4 mm | 5 | |
| 7 Sept. | Overcast | 14° /5° | 0.4 mm | 4 | |
| 8 Sept. | Partly cloudy | 18° /8° | 0 mm | 5 | |
| 9 Sept. | Mist | 21° /4° | 0 mm | 6 | |
| 10 Sept. | Mist | 21° /9° | 0 mm | 5 | |
| 11 Sept. | Patchy rain possible | 21° /12° | 0.4 mm | 5 | |
| 12 Sept. | Mist | 21° /10° | 5.2 mm | 5 | |
| 13 Sept. | Moderate rain | 21° /10° | 1.6 mm | 6 | |
| 14 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 15 Sept. | Mist | 25° /10° | 0 mm | 6 | |
| 16 Sept. | Patchy rain possible | 25° /12° | 2.3 mm | 6 | |
| 17 Sept. | Cloudy | 21° /11° | 0 mm | 5 | |
| 18 Sept. | Mist | 22° /9° | 0 mm | 5 | |
| 19 Sept. | Mist | 23° /8° | 0 mm | 6 | |
| 20 Sept. | Mist | 21° /11° | 0 mm | 5 | |
| 21 Sept. | Fog | 24° /13° | 1.1 mm | 5 | |
| 22 Sept. | Patchy light rain with thunder | 21° /12° | 9.2 mm | 5 | |
| 23 Sept. | Fog | 21° /11° | 0 mm | 5 | |
| 24 Sept. | Cloudy | 20° /9° | 0 mm | 5 | |
| 25 Sept. | Overcast | 20° /12° | 0 mm | 5 | |
| 26 Sept. | Partly cloudy | 20° /11° | 0 mm | 5 | |
| 27 Sept. | Mist | 22° /9° | 0 mm | 5 | |
| 28 Sept. | Partly cloudy | 22° /9° | 0 mm | 6 | |
| 29 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 30 Sept. | Fog | 23° /12° | 1.1 mm | 6 | |
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Important Notice
Our weather forecast for Algoma 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 Algoma forecast closer to your planned date for the most up-to-date weather information.
Algoma in September - FAQ
What are the expected maximum and minimum temperatures in Algoma 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 Algoma during September?
In September, Algoma can expect light to moderate rainfall, totaling 35.7 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Algoma during September?
The average wind speed in Algoma during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Algoma
Explore the daily rainfall trends and prepare for Algomas September weather 💧
UV exposure in Algoma during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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