October weather forecast
Downers Grove, IL

Weather in October

October, the same as September, in Downers Grove, Illinois, is a moderate autumn month, with an average temperature varying between 45.7°F (7.6°C) and 60.6°F (15.9°C).

Temperature

In Downers Grove, Illinois, the average high-temperature in October drops from a moderately hot 74.3°F (23.5°C) in September to a moderate 60.6°F (15.9°C). In Downers Grove, the average low-temperature is 45.7°F (7.6°C).

Humidity

October is the least humid month in Downers Grove, with an average relative humidity of 72%.

Rainfall

In Downers Grove, during 9.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 118.5 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Downers Grove are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 34.9 snowfall days, and 7.2" (183mm) of snow is accumulated.

Daylight

In Downers Grove, the average length of the day in October is 11h and 4min.
On the first day of the month, sunrise is at 6:49 am and sunset at 6:34 pm. On the last day of October, sunrise is at 7:23 am and sunset at 5:47 pm CDT.

Sunshine

In Downers Grove, the average sunshine in October is 5.6h.

UV index

In Downers Grove, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In October, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the least humid month in Downers Grove?

With an average relative humidity of 72%, October is the least humid month in Downers Grove, Illinois.

What is the average humidity in October in Downers Grove?

The average relative humidity in October in Downers Grove is 72%.

How much does it rain in Downers Grove in October?

In Downers Grove, Illinois, in October, it is raining for 9.8 days, with typically 1.22" (31mm) of accumulated precipitation.

When does it start snowing in Downers Grove?

October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow.

How many hours of daylight does Downers Grove have in October?

In Downers Grove, the average day length in October is 11h and 4min.

When is the sunrise / sunset in October in Downers Grove?

On the first day of October in Downers Grove, sunrise is at 6:49 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:47 pm CDT.

How many hours of sunshine does Downers Grove have in October?

The average sunshine duration in October is 5.6h.

What is the UV index reading in October in Downers Grove?

In Downers Grove, Illinois, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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 October
Downers Grove, IL

Average temperature in October - Downers Grove, IL
  • Average high temperature in October: 60.6°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in October: 45.7°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

[Resources]

Average pressure in October
Downers Grove, IL

Average pressure in October - Downers Grove, IL
  • Average pressure in October: 30.01"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 October
Downers Grove, IL

Average wind speed in October - Downers Grove, IL
  • Average wind speed in October: 8.6mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

[Resources]

Average humidity in October
Downers Grove, IL

Average humidity in October - Downers Grove, IL
  • Average humidity in October: 72%

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 October
Downers Grove, IL

Average rainfall in October - Downers Grove, IL
  • Average rainfall in October: 1.22"

The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").

[Resources]

Average rainfall days in October
Downers Grove, IL

Average rainfall days in October - Downers Grove, IL
  • Average rainfall days in October: 9.8 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).

[Resources]

Average snowfall in October
Downers Grove, IL

Average snowfall in October - Downers Grove, IL
  • Average snowfall in October: 0.2"

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in October
Downers Grove, IL

Average snowfall days in October - Downers Grove, IL
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in October /
Average sunshine in October
Downers Grove, IL

Average daylight in October / Average sunshine in October - Downers Grove, IL
  • Average daylight in October: 11h and 4min

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in October: 5h and 36min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

[Resources]

Average sunshine days in October
Downers Grove, IL

Average sunshine days in October - Downers Grove, IL
  • Average sunshine days in October: 19.6 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).

[Resources]

Average UV index in October
Downers Grove, IL

Average UV index in October - Downers Grove, IL
  • Average UV index in October: 3

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).

[Resources]

Average cloud cover in October
Downers Grove, IL

Average cloud cover in October - Downers Grove, IL
  • Average cloud cover in October: 42

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

[Resources]

Average visibility in October
Downers Grove, IL

Average visibility in October - Downers Grove, IL
  • Average visibility in October: 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