September weather forecastSault Ste. Marie, MI
September
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
With the beginning of September, the average high-temperature in Sault Ste. Marie shows a small decrease, transitioning from a moderately hot 74.7°F (23.7°C) in August to a refreshing 66.6°F (19.2°C). The average temperature in Sault Ste. Marie drops to a frosty 47.7°F (8.7°C) during the night in the month of September.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.Ocean temperature
In September, the average ocean temperature in Sault Ste. Marie is 57.2°F (14°C).Note: Swimming in 57.2°F (14°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In Sault Ste. Marie, the average length of the day in September 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
In Sault Ste. Marie, the average sunshine in September is 5.8h.UV index
The average daily maximum UV index in September in Sault Ste. Marie is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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").
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).
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").
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).
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).
Average daylight in September /
Average sunshine in September
Sault Ste. Marie, MI
- Average daylight in September: 12h and 30min
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 48min
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).
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).
