October weather forecast
Knoxville, IL

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Weather in October

October, like September, in Knoxville, Illinois, is another refreshing autumn month, with an average temperature fluctuating between 45.7°F (7.6°C) and 61.5°F (16.4°C).

Temperature

October brings a decrease in the average high-temperature, shifting from a moderately hot 75.6°F (24.2°C) in September to a refreshing 61.5°F (16.4°C). Nighttime temperatures hover around an average low of 45.7°F (7.6°C) in October.

Humidity

October is the least humid month in Knoxville, Illinois, with an average relative humidity of 72%.

Rainfall

In Knoxville, in October, it is raining for 8.8 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 109.9 rainfall days, and 11.14" (283mm) 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 0.28" (7mm) of snow. Throughout the year, there are 28 snowfall days, and 4.53" (115mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 6min.
On the first day of the month, sunrise is at 6:58 am and sunset at 6:42 pm. On the last day of October, sunrise is at 7:31 am and sunset at 5:57 pm CDT.

Sunshine

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

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, an average UV index of 3 transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the usual temperature for Knoxville in October?

The high-temperature during October is 61.5°F (16.4°C) and the low-temperature is 45.7°F (7.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 86°F (30°C).

What is the least humid month?

October is the least humid month, with an average relative humidity of 72%.

What is the average humidity in October?

In October, the average relative humidity is 72%.

How many days does it rain in October?

In Knoxville, in October, it is raining for 8.8 days, with typically 0.98" (25mm) of accumulated precipitation.

When does it start snowing?

October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.28" (7mm) of snow.

What is the average length of the day in October?

In Knoxville, the average day length in October is 11h and 6min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:58 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:57 pm CDT.

How many hours of sunshine does Knoxville have in October?

In October, the average sunshine duration is 5.6h.

How high is the UV index in October?

In Knoxville, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Knoxville, IL

Average temperature in October - Knoxville, IL
  • Average high temperature in October: 61.5°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in October: 45.7°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 (17.4°F).

Average pressure in October
Knoxville, IL

Average pressure in October - Knoxville, IL
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in October
Knoxville, IL

Average wind speed in October - Knoxville, IL
  • Average wind speed in October: 9.5mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in October
Knoxville, IL

Average humidity in October - Knoxville, IL
  • Average humidity in October: 72%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in October
Knoxville, IL

Average rainfall in October - Knoxville, IL
  • Average rainfall in October: 0.98"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are January and December (0.47").

Average rainfall days in October
Knoxville, IL

Average rainfall days in October - Knoxville, IL
  • Average rainfall days in October: 8.8 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is February (3.9 days).

Average snowfall in October
Knoxville, IL

Average snowfall in October - Knoxville, IL
  • Average snowfall in October: 0.28"

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Knoxville, IL

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

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Knoxville, 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 18min).

  • Average sunshine in October: 5h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in October
Knoxville, IL

Average sunshine days in October - Knoxville, IL
  • Average sunshine days in October: 19.9 days

The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in October
Knoxville, IL

Average UV index in October - Knoxville, IL
  • Average UV index in October: 3

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).

Average cloud cover in October
Knoxville, IL

Average cloud cover in October - Knoxville, IL
  • Average cloud cover in October: 38

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).

Average visibility in October
Knoxville, IL

Average visibility in October - Knoxville, 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).

Knoxville, Illinois, USA

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