September weather forecast
Elmhurst, IL

Weather in September

September, the first month of the autumn in Elmhurst, is also a moderately hot month, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 58.6°F (14.8°C).

Temperature

In Elmhurst, the average high-temperature in September marginally drops from 80.2°F (26.8°C) in August to a still warm 73.4°F (23°C). In Elmhurst, Illinois, in September, the average low-temperature is 58.6°F (14.8°C).

Humidity

The average relative humidity in September is 74%.

Rainfall

In Elmhurst, it is raining for 13.5 days, with typically 1.89" (48mm) of accumulated precipitation. In Elmhurst, during the entire year, the rain falls for 149.4 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

In Elmhurst, snow does not fall in June through September.

Daylight

In September, the average length of the day in Elmhurst is 12h and 28min.
On the first day of September in Elmhurst, sunrise is at 6:17 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

Sunshine

In Elmhurst, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the average humidity in September in Elmhurst?

The average relative humidity in September in Elmhurst, Illinois, is 74%.

How much does it rain in Elmhurst in September?

In Elmhurst, in September, it is raining for 13.5 days, with typically 1.89" (48mm) of accumulated precipitation.

When it does not snow in Elmhurst?

June through September are months without snowfall in Elmhurst, Illinois.

Does it snow in Elmhurst in September?

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

How many hours of daylight does Elmhurst have in September?

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

When are sunrise and sunset in September in Elmhurst?

On the first day of September in Elmhurst, Illinois, sunrise is at 6:17 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:35 pm CDT.

How many hours of sunshine does Elmhurst have in September?

In September, the average sunshine duration in Elmhurst, Illinois, is 8.8h.

What is the UV index reading in September in Elmhurst?

In Elmhurst, Illinois, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Elmhurst, IL

Average temperature in September - Elmhurst, IL
  • Average high temperature in September: 73.4°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

[Resources]

Average pressure in September
Elmhurst, IL

Average pressure in September - Elmhurst, 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).

[Resources]

Average wind speed in September
Elmhurst, IL

Average wind speed in September - Elmhurst, IL
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

[Resources]

Average humidity in September
Elmhurst, IL

Average humidity in September - Elmhurst, IL
  • Average humidity in September: 74%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

[Resources]

Average rainfall in September
Elmhurst, IL

Average rainfall in September - Elmhurst, IL
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

[Resources]

Average rainfall days in September
Elmhurst, IL

Average rainfall days in September - Elmhurst, IL
  • Average rainfall days in September: 13.5 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).

[Resources]

Average snowfall in September
Elmhurst, IL

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

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in September
Elmhurst, IL

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

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 11min).

  • Average sunshine in September: 8h and 48min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

[Resources]

Average sunshine days in September
Elmhurst, IL

Average sunshine days in September - Elmhurst, IL
  • Average sunshine days in September: 13 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).

[Resources]

Average UV index in September
Elmhurst, IL

Average UV index in September - Elmhurst, IL
  • Average UV index in September: 4

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

[Resources]

Average cloud cover in September
Elmhurst, IL

Average cloud cover in September - Elmhurst, IL
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).

[Resources]

Average visibility in September
Elmhurst, IL

Average visibility in September - Elmhurst, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location