September weather forecast
Sault Ste. Marie, MI

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The famous Soo Locks in Sault Ste. Marie, Michigan, with the deepwater section passage for large water vessels
The famous Soo Locks in Sault Ste. Marie, Michigan, with the deepwater section passage for large water vessels

Weather in September

The transition to fall starts to appear in Sault Ste. Marie by September. The city prepares to don a new robe of vibrant autumn colors, and the gradually dropping temperature allows for pleasant weather. The city experiences 3.8" (97mm) of rainfall, attributing to the vibrancy of the colors in foliage. The changing landscape brings along the opportunity to witness the beautiful color transition across the city. With September, the end of summer becomes a celebration rather than a goodbye.

Temperature

In Sault Ste. Marie, the average high-temperature in September gently drops from a moderately hot 74.7°F (23.7°C) in August to an enjoyable 66.6°F (19.2°C). Throughout the month of September, Sault Ste. Marie expects an average low of 47.7°F (8.7°C).

Rainfall

The month with the most rainfall in Sault Ste. Marie is September, when the rain falls for 12.9 days and typically aggregates up to 3.82" (97mm) of precipitation.

Snowfall

June through September are months without snowfall in Sault Ste. Marie, Michigan.

Ocean temperature

In September, the average ocean temperature in Sault Ste. Marie is 57.2°F (14°C).
Note: Diving into 57.2°F (14°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.

Daylight

In September, the average length of the day in Sault Ste. Marie, Michigan, is 12h and 32min.
On the first day of the month, sunrise is at 6:58 am and sunset at 8:15 pm. On the last day of September, in Sault Ste. Marie, sunrise is at 7:35 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September in Sault Ste. Marie is 5.8h.

UV index

In September, the average daily maximum UV index in Sault Ste. Marie is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 5 in September transforms into this advice:
Guard yourself - Avoiding sunburn is suggested. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What is the temperature in September in Sault Ste. Marie?

In September, in Sault Ste. Marie, the average high-temperature is 66.6°F (19.2°C), and the average low-temperature is 47.7°F (8.7°C).

What is the rainiest month in Sault Ste. Marie?

September is the month with the most rainfall in Sault Ste. Marie, Michigan. Rain falls for 12.9 days and accumulates 3.82" (97mm) of precipitation.

How many days does it rain in September in Sault Ste. Marie?

In Sault Ste. Marie, in September, it is raining for 12.9 days, with typically 3.82" (97mm) of accumulated precipitation.

When it does not snow in Sault Ste. Marie?

In Sault Ste. Marie, snow does not fall in June through September.

Does it snow in Sault Ste. Marie in September?

In Sault Ste. Marie, Michigan, in September, it doesn't snow. In October, it regularly snows.

What is the water temperature in September in Sault Ste. Marie?

In Sault Ste. Marie, the average seawater temperature in September is 57.2°F (14°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in September in Sault Ste. Marie?

In September, the average day length is 12h and 32min.

When are sunrise and sunset in September in Sault Ste. Marie?

On the first day of September in Sault Ste. Marie, Michigan, sunrise is at 6:58 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:18 pm EDT.

How long on average sun shines in September in Sault Ste. Marie?

In Sault Ste. Marie, the average sunshine duration in September is 5.8h.

How high is the UV index in September in Sault Ste. Marie?

The average daily maximum UV index in September in Sault Ste. Marie, Michigan, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
74.7°F 23.7°C
66.5°F 19.2°C
53.3°F 11.8°C
Average low temperature
54.5°F 12.5°C
47.7°F 8.7°C
37.8°F 3.2°C
Average rainfall
3.2" 81mm
3.8" 97mm
3.8" 97mm
Average rainfall days
10.9
12.9
15.5
Average snowfall
0" 0mm
0" 0mm
1.6" 41mm
Average snowfall days
0
0.1
2.2
Average sea temperature
59°F 15°C
57°F 13.9°C
50°F 10°C
Average daylight
14h 1min
12h 3min
10h 5min
Average sunshine
8h 0min
5h 5min
4h 0min
Average UV index
7
5
3

Average temperature in September
Sault Ste. Marie, MI

Average temperature in September - Sault Ste. Marie, MI
  • Average high temperature in September: 66.5°F

The warmest month (with the highest average high temperature) is July (76.2°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in September: 47.7°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is January (7.6°F).

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Average rainfall in September
Sault Ste. Marie, MI

Average rainfall in September - Sault Ste. Marie, MI
  • Average rainfall in September: 3.8"

The wettest months (with the highest rainfall) are September and October (3.8").
The driest month (with the least rainfall) is February (1.3").

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Average rainfall days in September
Sault Ste. Marie, MI

Average rainfall days in September - Sault Ste. Marie, MI
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is December (18.8 days).
The months with the least rainy days are April and August (10.9 days).

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Average snowfall in September
Sault Ste. Marie, MI

Average snowfall in September - Sault Ste. Marie, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is December (33.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Sault Ste. Marie, MI

Average snowfall days in September - Sault Ste. Marie, MI
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July and August (0 days).

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Average sea temperature in September
Sault Ste. Marie, MI

Average sea temperature in September - Sault Ste. Marie, MI
  • Average sea temperature in September: 57°F

The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).

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Average daylight in September /
Average sunshine in September
Sault Ste. Marie, MI

Average daylight in September / Average sunshine in September - Sault Ste. Marie, MI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 5h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is November (Average sunshine: 2h and 18min).

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Average UV index in September
Sault Ste. Marie, MI

Average UV index in September - Sault Ste. Marie, MI
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).

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Sault Ste. Marie, Michigan, USA

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