October weather forecast
Tennessee, IL

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Weather in October

October, the same as September, is another refreshing autumn month in Tennessee, Illinois, with an average temperature ranging between max 63°F (17.2°C) and min 46°F (7.8°C).

Temperature

October ushers in a slight temperature change, with average high-temperatures reducing from September's warm 76.8°F (24.9°C) to an enjoyable 63°F (17.2°C). In Tennessee, October's nights observe an average temperature dip to a chilly 46°F (7.8°C).

Humidity

The least humid month in Tennessee is October, with an average relative humidity of 71%.

Rainfall

In Tennessee, Illinois, in October, during 7.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 94.4 rainfall days, and 7.76" (197mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Tennessee 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. In Tennessee, during the entire year, snow falls for 20.5 days and aggregates up to 2.44" (62mm) of snow.

Daylight

In Tennessee, the average length of the day in October is 11h and 7min.
On the first day of October, sunrise is at 7:00 am and sunset at 6:45 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 6:01 pm CDT.

Sunshine

In Tennessee, the average sunshine in October is 5.6h.

UV index

The average daily maximum UV index in October in Tennessee, Illinois, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In October, the UV index of 3 transforms into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are the temperatures in Tennessee in October?

Tennessee in October has an average high-temperature of 63°F (17.2°C) and an average low-temperature of 46°F (7.8°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the least humid month in Tennessee?

The least humid month in Tennessee, Illinois, is October, with an average relative humidity of 71%.

What is the average humidity in October in Tennessee?

In October, the average relative humidity in Tennessee is 71%.

How many days does it rain in October in Tennessee?

In October, the rain falls for 7.5 days. Throughout October, 0.71" (18mm) of precipitation is accumulated.

When does it start snowing in Tennessee?

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 Tennessee?

In October, the average day length in Tennessee, Illinois, is 11h and 7min.

When are sunrise and sunset in October in Tennessee?

In October, on the first day of the month, sunrise is at 7:00 am and sunset at 6:45 pm. On the last day of the month, in Tennessee, Illinois, sunrise is at 7:32 am and sunset at 6:01 pm CDT.

How long on average sun shines in October in Tennessee?

In Tennessee, the average sunshine duration in October is 5.6h.

How high is the UV index in October in Tennessee?

In Tennessee, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from 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
Tennessee, IL

Average temperature in October - Tennessee, IL
  • Average high temperature in October: 63°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in October: 46°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in October
Tennessee, IL

Average pressure in October - Tennessee, IL
  • Average pressure in October: 30.02"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in October
Tennessee, IL

Average wind speed in October - Tennessee, IL
  • Average wind speed in October: 9.2mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in October
Tennessee, IL

Average humidity in October - Tennessee, IL
  • Average humidity in October: 71%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in October
Tennessee, IL

Average rainfall in October - Tennessee, IL
  • Average rainfall in October: 0.71"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").

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Average rainfall days in October
Tennessee, IL

Average rainfall days in October - Tennessee, IL
  • Average rainfall days in October: 7.5 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in October
Tennessee, IL

Average snowfall in October - Tennessee, IL
  • Average snowfall in October: 0.08"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Tennessee, IL

Average snowfall days in October - Tennessee, IL
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Tennessee, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 5h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in October
Tennessee, IL

Average sunshine days in October - Tennessee, IL
  • Average sunshine days in October: 20.7 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).

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Average UV index in October
Tennessee, IL

Average UV index in October - Tennessee, 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).

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Average cloud cover in October
Tennessee, IL

Average cloud cover in October - Tennessee, IL
  • Average cloud cover in October: 36

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in October
Tennessee, IL

Average visibility in October - Tennessee, 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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Tennessee, Illinois, USA

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