September weather forecast
Mount Auburn, IL

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Weather in September

September, the first month of the autumn in Mount Auburn, is still a warm month, with an average temperature fluctuating between 77.4°F (25.2°C) and 58.6°F (14.8°C).

Temperature

The advent of September observes an average high-temperature of a still warm 77.4°F (25.2°C), nearly identical to August's 81.9°F (27.7°C). In the month of September, the average low-temperature in Mount Auburn usually rests at a refreshing 58.6°F (14.8°C).

Humidity

The average relative humidity in September is 75%.

Rainfall

In Mount Auburn, in September, during 12 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Mount Auburn, Illinois, during the entire year, the rain falls for 141.7 days and collects up to 22.72" (577mm) of precipitation.

Snowfall

May through October are months without snowfall in Mount Auburn.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:27 pm. On the last day of September, in Mount Auburn, sunrise is at 6:53 am and sunset at 6:40 pm CDT.

Sunshine

In Mount Auburn, the average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 5 suggests these recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What is the temperature in September in Mount Auburn?

In Mount Auburn, in September, the average high-temperature is 77.4°F (25.2°C), and the average low-temperature is 58.6°F (14.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is appraised at 87.8°F (31°C).

What is the average humidity in September in Mount Auburn?

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

How many days does it rain in September in Mount Auburn?

In September, in Mount Auburn, Illinois, the rain falls for 12 days. Throughout September, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Mount Auburn?

May through October are months without snowfall.

How many hours of daylight does Mount Auburn have in September?

In Mount Auburn, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September in Mount Auburn?

On the first day of September in Mount Auburn, Illinois, sunrise is at 6:25 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm CDT.

How many hours of sunshine does Mount Auburn have in September?

In September, the average sunshine duration is 9.3h.

How high is the UV index in September in Mount Auburn?

The average daily maximum UV index in September in Mount Auburn is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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
Mount Auburn, IL

Average temperature in September - Mount Auburn, IL
  • Average high temperature in September: 77.4°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in September
Mount Auburn, IL

Average pressure in September - Mount Auburn, IL
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Mount Auburn, IL

Average wind speed in September - Mount Auburn, IL
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in September
Mount Auburn, IL

Average humidity in September - Mount Auburn, IL
  • Average humidity in September: 75%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Mount Auburn, IL

Average rainfall in September - Mount Auburn, IL
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is December (1.14").

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Average rainfall days in September
Mount Auburn, IL

Average rainfall days in September - Mount Auburn, IL
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in September
Mount Auburn, IL

Average snowfall in September - Mount Auburn, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Mount Auburn, IL

Average snowfall days in September - Mount Auburn, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.3 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
Mount Auburn, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in September
Mount Auburn, IL

Average sunshine days in September - Mount Auburn, IL
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (11 days).

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Average UV index in September
Mount Auburn, IL

Average UV index in September - Mount Auburn, IL
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Mount Auburn, IL

Average cloud cover in September - Mount Auburn, IL
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in September
Mount Auburn, IL

Average visibility in September - Mount Auburn, IL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Mount Auburn, Illinois, USA

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