October weather forecast
West Chicago, IL

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Weather in October

October, like September, is a moderate autumn month in West Chicago, Illinois, with an average temperature ranging between max 60.3°F (15.7°C) and min 44.8°F (7.1°C).

Temperature

With the beginning of October, the average high-temperature shows a decrease, transitioning from a moderately hot 73.4°F (23°C) in September to a mild 60.3°F (15.7°C). Throughout October, West Chicago registers a consistent average low-temperature of 44.8°F (7.1°C).

Humidity

The least humid month is October, with an average relative humidity of 74%.

Rainfall

In West Chicago, Illinois, in October, it is raining for 8.4 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 101.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 28.3 snowfall days, and 3.74" (95mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 4min.
On the first day of the month, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of October, sunrise is at 7:24 am and sunset at 5:47 pm CDT.

Sunshine

In West Chicago, the average sunshine in October is 5.5h.

UV index

The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in October converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

October temperatures vary between a high-temperature of 60.3°F (15.7°C) and a low-temperature of 44.8°F (7.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in July is calculated to be 86°F (30°C).

What is the least humid month?

With an average relative humidity of 74%, October is the least humid month.

What is the average humidity in October?

In October, the average relative humidity is 74%.

How much does it rain in October?

In October, the rain falls for 8.4 days. Throughout October, 0.79" (20mm) of precipitation is accumulated.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow.

What is the average length of the day in October?

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

When are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 6:50 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:47 pm CDT.

How long on average sun shines in October?

In October, the average sunshine duration is 5.5h.

What is the UV index reading in October?

In October, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal 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 October
West Chicago, IL

Average temperature in October - West Chicago, IL
  • Average high temperature in October: 60.3°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in October: 44.8°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in October
West Chicago, IL

Average pressure in October - West Chicago, IL
  • Average pressure in October: 30"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).

Average wind speed in October
West Chicago, IL

Average wind speed in October - West Chicago, IL
  • Average wind speed in October: 8.7mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in October
West Chicago, IL

Average humidity in October - West Chicago, IL
  • Average humidity in October: 74%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in October
West Chicago, IL

Average rainfall in October - West Chicago, IL
  • Average rainfall in October: 0.79"

The wettest month (with the highest rainfall) is May (1.26").
The driest months (with the least rainfall) are November and December (0.39").

Average rainfall days in October
West Chicago, IL

Average rainfall days in October - West Chicago, IL
  • Average rainfall days in October: 8.4 days

The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (3.4 days).

Average snowfall in October
West Chicago, IL

Average snowfall in October - West Chicago, IL
  • Average snowfall in October: 0.08"

The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
West Chicago, IL

Average snowfall days in October - West Chicago, IL
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
West Chicago, IL

Average daylight in October / Average sunshine in October - West Chicago, IL
  • Average daylight in October: 11h and 1min

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

  • Average sunshine in October: 5h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in October
West Chicago, IL

Average sunshine days in October - West Chicago, IL
  • Average sunshine days in October: 20.8 days

The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (13.3 days).

Average UV index in October
West Chicago, IL

Average UV index in October - West Chicago, IL
  • Average UV index in October: 2

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).

Average cloud cover in October
West Chicago, IL

Average cloud cover in October - West Chicago, IL
  • Average cloud cover in October: 43

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).

Average visibility in October
West Chicago, IL

Average visibility in October - West Chicago, IL
  • Average visibility in October: 6mi

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

West Chicago, Illinois, USA

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