October weather forecast
Chicago Heights, IL

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Weather in October

October, the same as September, is another refreshing autumn month in Chicago Heights, Illinois, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 46.9°F (8.3°C).

Temperature

The onset of October introduces a moderate change in Chicago Heights's weather, with average high-temperatures falling from September's warm 73.9°F (23.3°C) to an enjoyable 61.2°F (16.2°C). An average temperature of 46.9°F (8.3°C) marks the nights in Chicago Heights, Illinois, in October.

Humidity

With an average relative humidity of 73%, October is the least humid month.

Rainfall

In Chicago Heights, in October, during 14.3 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, in Chicago Heights, Illinois, there are 155.6 rainfall days, and 31.3" (795mm) 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 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 44.6 snowfall days, and 16.46" (418mm) of snow is accumulated.

Daylight

In October, the average length of the day in Chicago Heights is 11h and 5min.
On the first day of October in Chicago Heights, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:46 pm CDT.

Sunshine

The average sunshine in October is 5.9h.

UV index

The average daily maximum UV index in October in Chicago Heights, Illinois, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 2 in October transforms into this advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What are the temperatures in Chicago Heights in October?

In Chicago Heights, 61.2°F (16.2°C) is the average high-temperature and 46.9°F (8.3°C) is the average low-temperature during October. In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 87.8°F (31°C).

What is the least humid month in Chicago Heights?

The least humid month in Chicago Heights, Illinois, is October, with an average relative humidity of 73%.

What is the average humidity in October in Chicago Heights?

In Chicago Heights, the average relative humidity in October is 73%.

How many days does it rain in October in Chicago Heights?

In October, in Chicago Heights, the rain falls for 14.3 days. Throughout October, 2.76" (70mm) of precipitation is accumulated.

When does it start to snow in Chicago Heights?

October is the first month it typically snows in Chicago Heights, Illinois. 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 Chicago Heights?

In October, the average day length in Chicago Heights is 11h and 5min.

When is the sunrise / sunset in October in Chicago Heights?

In October, on the first day of the month, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:46 pm CDT.

How long on average sun shines in October in Chicago Heights?

In Chicago Heights, Illinois, the average sunshine duration in October is 5.9h.

What is the UV index intensity in October in Chicago Heights?

The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
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
Chicago Heights, IL

Average temperature in October - Chicago Heights, IL
  • Average high temperature in October: 61.2°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in October: 46.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in October
Chicago Heights, IL

Average pressure in October - Chicago Heights, 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
Chicago Heights, IL

Average wind speed in October - Chicago Heights, IL
  • Average wind speed in October: 9.1mph

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).

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Average humidity in October
Chicago Heights, IL

Average humidity in October - Chicago Heights, IL
  • Average humidity in October: 73%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in October
Chicago Heights, IL

Average rainfall in October - Chicago Heights, IL
  • Average rainfall in October: 2.76"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in October
Chicago Heights, IL

Average rainfall days in October - Chicago Heights, IL
  • Average rainfall days in October: 14.3 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in October
Chicago Heights, IL

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

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 October
Chicago Heights, IL

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

The month with the highest number of snowfall days is January (12.6 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
Chicago Heights, IL

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in October: 5h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in October
Chicago Heights, IL

Average sunshine days in October - Chicago Heights, IL
  • Average sunshine days in October: 14.4 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index in October
Chicago Heights, IL

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

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

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Average cloud cover in October
Chicago Heights, IL

Average cloud cover in October - Chicago Heights, IL
  • Average cloud cover in October: 42

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in October
Chicago Heights, IL

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

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

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Chicago Heights, Illinois, USA

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