October weather forecast
Chillicothe, IL

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Weather in October

October, like September, in Chillicothe, Illinois, is another comfortable autumn month, with an average temperature varying between 46°F (7.8°C) and 61.9°F (16.6°C).

Temperature

As October commences, the average high-temperature shows a reduction, transitioning from a moderately hot 75.9°F (24.4°C) in September to a comfortable 61.9°F (16.6°C). Chillicothe experiences an average low-temperature reading of 46°F (7.8°C) throughout October.

Humidity

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

Rainfall

In Chillicothe, during October, the rain falls for 10 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Chillicothe, during the entire year, the rain falls for 123.4 days and collects up to 15.12" (384mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 27.8 snowfall days, and 6.46" (164mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 6min.
On the first day of October, sunrise is at 6:55 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:54 pm CDT.

Sunshine

In October, the average sunshine is 5.8h.

UV index

In October, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 3 in October transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures?

The average high-temperature and low-temperature during October are 61.9°F (16.6°C) and 46°F (7.8°C) respectively. In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 89.6°F (32°C).

What is the least humid month in Chillicothe?

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 much does it rain in Chillicothe in October?

In Chillicothe, in October, it is raining for 10 days, with typically 1.34" (34mm) of accumulated precipitation.

When does it start snowing?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow.

How many hours of daylight does Chillicothe have in October?

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

What time are sunrise and sunset in October?

On the first day of October, sunrise is at 6:55 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:54 pm CDT.

How long on average sun shines in October?

The average sunshine duration in October is 5.8h.

How high is the UV index in October?

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

Average temperature in October - Chillicothe, IL
  • Average high temperature in October: 61.9°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in October: 46°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in October
Chillicothe, IL

Average pressure in October - Chillicothe, 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
Chillicothe, IL

Average wind speed in October - Chillicothe, IL
  • Average wind speed in October: 9.3mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in October
Chillicothe, IL

Average humidity in October - Chillicothe, 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
Chillicothe, IL

Average rainfall in October - Chillicothe, IL
  • Average rainfall in October: 1.34"

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in October
Chillicothe, IL

Average rainfall days in October - Chillicothe, IL
  • Average rainfall days in October: 10 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in October
Chillicothe, IL

Average snowfall in October - Chillicothe, IL
  • Average snowfall in October: 0.16"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Chillicothe, IL

Average snowfall days in October - Chillicothe, IL
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is January (9.2 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
Chillicothe, IL

Average daylight in October / Average sunshine in October - Chillicothe, 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in October
Chillicothe, IL

Average sunshine days in October - Chillicothe, IL
  • Average sunshine days in October: 19 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (12.4 days).

Average UV index in October
Chillicothe, IL

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

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

Average cloud cover in October
Chillicothe, IL

Average cloud cover in October - Chillicothe, 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 31).

Average visibility in October
Chillicothe, IL

Average visibility in October - Chillicothe, IL
  • Average visibility in October: 6mi

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

Chillicothe, Illinois, USA

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