Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 77°F (25°C) in August to a pleasant 70°F (21.1°C). September nights observe an average temperature dip to a cool 53.4°F (11.9°C).Humidity
In Bentley, the average relative humidity in September is 78%.Rainfall
The months with the least rainfall are February, September and November Rain falls for 10.8 days and accumulates 1.02" (26mm) of rain.Snowfall
May through October are months without snowfall.Daylight
In Bentley, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 7:00 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:18 pm EDT.
Sunshine
In Bentley, the average sunshine in September is 7.9h.UV index
In Bentley, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 3 during September translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Bentley?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow in Bentley?
How many hours of daylight does Bentley have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Bentley have in September?
What is the UV index intensity in September?
Average temperature in September
Bentley, MI
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Bentley, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Bentley, MI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Bentley, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Bentley, MI
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are February, September and November (1.02").
Average rainfall days in September
Bentley, MI
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Bentley, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Bentley, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bentley, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Bentley, MI
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Bentley, MI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Bentley, MI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Bentley, MI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Bentley, Michigan, USA
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