October weather forecast
Deer Park, IL

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Weather in October

October, like September, is another refreshing autumn month in Deer Park, Illinois, with an average temperature fluctuating between 59.5°F (15.3°C) and 45.3°F (7.4°C).

Temperature

A decrease in the average high-temperature is observed during October, shifting from an agreeable 72.9°F (22.7°C) in September to a moderate 59.5°F (15.3°C). In the month of October, the nighttime temperature dips to a steady average of 45.3°F (7.4°C).

Humidity

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

Rainfall

In Deer Park, in October, during 14.6 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Deer Park, during the entire year, the rain falls for 163.1 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

Months with snowfall in Deer Park are January through May, October through December. October is the first month it typically snows in Deer Park, Illinois. Throughout October, in the average 0.5 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 55.5 snowfall days, and 22.95" (583mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 3min.
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 Deer Park, sunrise is at 7:24 am and sunset at 5:46 pm CDT.

Sunshine

The average sunshine in October in Deer Park, Illinois, is 5.5h.

UV index

The average daily maximum UV index in October in Deer Park is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 2 during October translates into the following guidance:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What are the temperatures in Deer Park in October?

The average high-temperature and low-temperature during October are 59.5°F (15.3°C) and 45.3°F (7.4°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the least humid month in Deer Park?

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

What is the average humidity in October in Deer Park?

In Deer Park, the average relative humidity in October is 74%.

How many days does it rain in October in Deer Park?

In October, in Deer Park, Illinois, the rain falls for 14.6 days. Throughout October, 2.72" (69mm) of precipitation is accumulated.

When does it start to snow in Deer Park?

October is the first month it typically snows in Deer Park, Illinois. Throughout October, in the average 0.5 snowfall days, it receives 0.35" (9mm) of snow.

What is the average length of the day in October in Deer Park?

In Deer Park, Illinois, the average day length in October is 11h and 3min.

What time are sunrise and sunset in October in Deer Park?

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, in Deer Park, Illinois, sunrise is at 7:24 am and sunset at 5:46 pm CDT.

How many hours of sunshine does Deer Park have in October?

The average sunshine duration in October in Deer Park, Illinois, is 5.5h.

What is the UV index reading in October in Deer Park?

In October, the average daily maximum UV index in Deer Park, Illinois, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Deer Park, IL

Average temperature in October - Deer Park, IL
  • Average high temperature in October: 59.5°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.7°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 (16.3°F).

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Average pressure in October
Deer Park, IL

Average pressure in October - Deer Park, 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).

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Average wind speed in October
Deer Park, IL

Average wind speed in October - Deer Park, IL
  • Average wind speed in October: 8.8mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in October
Deer Park, IL

Average humidity in October - Deer Park, 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
Deer Park, IL

Average rainfall in October - Deer Park, IL
  • Average rainfall in October: 2.72"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in October
Deer Park, IL

Average rainfall days in October - Deer Park, IL
  • Average rainfall days in October: 14.6 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in October
Deer Park, IL

Average snowfall in October - Deer Park, IL
  • Average snowfall in October: 0.35"

The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Deer Park, IL

Average snowfall days in October - Deer Park, IL
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (15.5 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
Deer Park, IL

Average daylight in October / Average sunshine in October - Deer Park, 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 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).

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Average sunshine days in October
Deer Park, IL

Average sunshine days in October - Deer Park, IL
  • Average sunshine days in October: 13.7 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).

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Average UV index in October
Deer Park, IL

Average UV index in October - Deer Park, IL
  • Average UV index in October: 2

The months with the highest UV index are 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
Deer Park, IL

Average cloud cover in October - Deer Park, IL
  • Average cloud cover in October: 43

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 31).

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Average visibility in October
Deer Park, IL

Average visibility in October - Deer Park, IL
  • Average visibility in October: 6mi

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

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Deer Park, Illinois, USA

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