September weather forecast
New Lenox, IL

Weather in September

The first month of the autumn, September, is also a moderately hot month in New Lenox, Illinois, with an average temperature ranging between min 57°F (13.9°C) and max 74.3°F (23.5°C).

Temperature

In New Lenox, Illinois, the average high-temperature in September marginally drops from 80.2°F (26.8°C) in August to a still warm 74.3°F (23.5°C). In New Lenox, the average low-temperature is 57°F (13.9°C).

Humidity

The average relative humidity in September is 77%.

Rainfall

In New Lenox, during September, the rain falls for 13.2 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, in New Lenox, Illinois, there are 149.8 rainfall days, and 31.26" (794mm) of precipitation is accumulated.

Snowfall

In New Lenox, snow does not fall in May through September.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of September, in New Lenox, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

Sunshine

In September, the average sunshine in New Lenox is 8.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in New Lenox?

In New Lenox, Illinois, the average relative humidity in September is 77%.

How many days does it rain in September in New Lenox?

In New Lenox, during September, the rain falls for 13.2 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in New Lenox?

May through September are months without snowfall in New Lenox.

Does it snow in New Lenox in September?

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

How many hours of daylight does New Lenox have in September?

In September, the average day length in New Lenox is 12h and 28min.

When are sunrise and sunset in September in New Lenox?

In September, on the first day of the month, sunrise is at 6:18 am and sunset at 7:25 pm. On the last day of the month, in New Lenox, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

How long on average sun shines in September in New Lenox?

In September, the average sunshine duration in New Lenox is 8.3h.

How high is the UV index in September in New Lenox?

In New Lenox, Illinois, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.

Average temperature in September
New Lenox, IL

Average temperature in September - New Lenox, IL
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in September
New Lenox, IL

Average pressure in September - New Lenox, IL
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
New Lenox, IL

Average wind speed in September - New Lenox, IL
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in September
New Lenox, IL

Average humidity in September - New Lenox, IL
  • Average humidity in September: 77%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
New Lenox, IL

Average rainfall in September - New Lenox, IL
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is May (4.21").
The driest months (with the least rainfall) are February and December (1.61").

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Average rainfall days in September
New Lenox, IL

Average rainfall days in September - New Lenox, IL
  • Average rainfall days in September: 13.2 days

The months with the highest number of rainy days are June and July (17.3 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in September
New Lenox, IL

Average snowfall in September - New Lenox, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
New Lenox, IL

Average snowfall days in September - New Lenox, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.3 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
New Lenox, IL

Average daylight in September / Average sunshine in September - New Lenox, IL
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in September: 8.3h

The month with the most sunshine is August (Average sunshine: 9.6h).
The month with the least sunshine is January (Average sunshine: 3.6h).

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Average sunshine days in September
New Lenox, IL

Average sunshine days in September - New Lenox, IL
  • Average sunshine days in September: 15 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in September
New Lenox, IL

Average UV index in September - New Lenox, IL
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
New Lenox, IL

Average cloud cover in September - New Lenox, IL
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
New Lenox, IL

Average visibility in September - New Lenox, IL
  • Average visibility in September: 6mi

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

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