September weather forecast
Bentley, IL

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Weather in September

September, the first month of the autumn in Bentley, is still a warm month, with an average temperature varying between 77.2°F (25.1°C) and 57.7°F (14.3°C).

Temperature

September welcomes an average high-temperature of a still warm 77.2°F (25.1°C), not much different from the preceding month. Bentley anticipates an average minimum temperature of 57.7°F (14.3°C) in the month of September.

Humidity

In September, the average relative humidity in Bentley is 75%.

Rainfall

In Bentley, in September, during 10.5 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in Bentley, there are 128.2 rainfall days, and 20.08" (510mm) of precipitation is accumulated.

Snowfall

In Bentley, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of September, in Bentley, sunrise is at 7:00 am and sunset at 6:47 pm CDT.

Sunshine

In Bentley, the average sunshine in September is 9.4h.

UV index

In Bentley, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the temperature in September in Bentley?

An average high-temperature, in September, in Bentley, is 77.2°F (25.1°C) and the average low-temperature is 57.7°F (14.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 89.6°F (32°C).

What is the average humidity in September in Bentley?

The average relative humidity in September in Bentley, Illinois, is 75%.

How much does it rain in Bentley in September?

In Bentley, in September, it is raining for 10.5 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow in Bentley?

In Bentley, Illinois, snow does not fall in May through September.

Does it snow in Bentley in September?

In Bentley, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Bentley have in September?

In Bentley, the average day length in September is 12h and 27min.

When are sunrise and sunset in September in Bentley?

On the first day of September in Bentley, Illinois, sunrise is at 6:32 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm CDT.

How many hours of sunshine does Bentley have in September?

The average sunshine duration in September is 9.4h.

How high is the UV index in September in Bentley?

In Bentley, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Bentley, IL

Average temperature in September - Bentley, IL
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in September: 57.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

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Average pressure in September
Bentley, IL

Average pressure in September - Bentley, IL
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Bentley, IL

Average wind speed in September - Bentley, IL
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in September
Bentley, IL

Average humidity in September - Bentley, IL
  • Average humidity in September: 75%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Bentley, IL

Average rainfall in September - Bentley, IL
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in September
Bentley, IL

Average rainfall days in September - Bentley, IL
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).

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Average snowfall in September
Bentley, IL

Average snowfall in September - Bentley, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Bentley, IL

Average snowfall days in September - Bentley, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Bentley, IL

Average daylight in September / Average sunshine in September - Bentley, IL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in September
Bentley, IL

Average sunshine days in September - Bentley, IL
  • Average sunshine days in September: 17.6 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is June (11.6 days).

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Average UV index in September
Bentley, IL

Average UV index in September - Bentley, IL
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Bentley, IL

Average cloud cover in September - Bentley, IL
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 29).

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Average visibility in September
Bentley, IL

Average visibility in September - Bentley, IL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Bentley, Illinois, USA

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