October weather forecast
Carol Stream, IL

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Weather in October

October, the same as September, in Carol Stream, Illinois, is another mild autumn month, with an average temperature varying between 60.4°F (15.8°C) and 45.3°F (7.4°C).

Temperature

Carol Stream's progression into October includes a drop in the average high-temperature, from a warm 73.6°F (23.1°C) in September to a mild 60.4°F (15.8°C). An average low-temperature of 45.3°F (7.4°C) is noted during the month of October.

Humidity

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

Rainfall

In Carol Stream, Illinois, in October, during 10 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, in Carol Stream, Illinois, there are 119.1 rainfall days, and 10.83" (275mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.12" (3mm) of snow. In Carol Stream, during the entire year, snow falls for 34.4 days and aggregates up to 5.2" (132mm) of snow.

Daylight

The average length of the day in October in Carol Stream 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, in Carol Stream, sunrise is at 7:24 am and sunset at 5:47 pm CDT.

Sunshine

In Carol Stream, the average sunshine in October is 5.6h.

UV index

In Carol Stream, 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 rays for the average person.
Note: The maximum UV index of 2 during October translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are October temperatures in Carol Stream?

Carol Stream in October has an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 45.3°F (7.4°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the least humid month in Carol Stream?

October is the least humid month in Carol Stream, with an average relative humidity of 74%.

What is the average humidity in October in Carol Stream?

In Carol Stream, the average relative humidity in October is 74%.

How much does it rain in Carol Stream in October?

In Carol Stream, in October, during 10 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

When does it start to snow in Carol Stream?

October is the first month it typically snows. Throughout October, in the average 0.4 snowfall days, it receives 0.12" (3mm) of snow.

How many hours of daylight does Carol Stream have in October?

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

When are sunrise and sunset in October in Carol Stream?

On the first day of October in Carol Stream, 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 Carol Stream?

In October, the average sunshine duration is 5.6h.

What is the UV index intensity in October in Carol Stream?

In Carol Stream, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Carol Stream, IL

Average temperature in October - Carol Stream, IL
  • Average high temperature in October: 60.4°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in October: 45.3°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 (16.7°F).

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Average pressure in October
Carol Stream, IL

Average pressure in October - Carol Stream, 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).

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Average wind speed in October
Carol Stream, IL

Average wind speed in October - Carol Stream, IL
  • Average wind speed in October: 8.7mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in October
Carol Stream, IL

Average humidity in October - Carol Stream, 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%).

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Average rainfall in October
Carol Stream, IL

Average rainfall in October - Carol Stream, IL
  • Average rainfall in October: 0.91"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").

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Average rainfall days in October
Carol Stream, IL

Average rainfall days in October - Carol Stream, IL
  • Average rainfall days in October: 10 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in October
Carol Stream, IL

Average snowfall in October - Carol Stream, IL
  • Average snowfall in October: 0.12"

The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Carol Stream, IL

Average snowfall days in October - Carol Stream, IL
  • Average snowfall days in October: 0.4 days

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Carol Stream, IL

Average daylight in October / Average sunshine in October - Carol Stream, 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 4min

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

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Average sunshine days in October
Carol Stream, IL

Average sunshine days in October - Carol Stream, IL
  • Average sunshine days in October: 19.1 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in October
Carol Stream, IL

Average UV index in October - Carol Stream, 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).

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Average cloud cover in October
Carol Stream, IL

Average cloud cover in October - Carol Stream, IL
  • Average cloud cover in October: 42

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).

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Average visibility in October
Carol Stream, IL

Average visibility in October - Carol Stream, 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).

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Carol Stream, Illinois, USA

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