October weather forecast
Champaign, IL

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An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in October

October further amplifies the fall season in Champaign with a discernible downturn in temperature from September. The drop is more prominent in this month, translating into a cool and pleasing weather. The occurrence of rain witnesses an uptick, with over 1.5" (38mm) of rainfall on average. In a stark contrast to September, the disappearance of clouds lets more sunlight through for longer durations. Concurrently, the wind speed increases, adding a brisk touch to the October weather.

Temperature

Arrival of October comes with a reduction in the average high-temperature, falling from a warm 76.1°F (24.5°C) in September to a comfortable 63.5°F (17.5°C). An average temperature of 47.8°F (8.8°C) is recorded during the nights in October.

Humidity

October is the least humid month, with an average relative humidity of 70%.

Rainfall

In Champaign, in October, during 10.6 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in October is 11h and 8min.
On the first day of the month, sunrise is at 6:50 am and sunset at 6:34 pm. On the last day of October, sunrise is at 7:21 am and sunset at 5:51 pm CDT.

Sunshine

The average sunshine in October in Champaign is 6.2h.

UV index

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 3 in October translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

What are October temperatures?

October temperatures in Champaign, Illinois, vary between a high-temperature of 63.5°F (17.5°C) and a low-temperature of 47.8°F (8.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the least humid month in Champaign?

October is the least humid month, with an average relative humidity of 70%.

What is the average humidity in October?

The average relative humidity in October in Champaign is 70%.

How much does it rain in October?

In October, the rain falls for 10.6 days. Throughout October, 1.5" (38mm) of precipitation is accumulated.

When it does not snow?

In Champaign, snow does not fall in May through October.

Does it snow in October?

In Champaign, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October?

In October, the average day length is 11h and 8min.

When is the sunrise / sunset in October?

On the first day of October, sunrise is at 6:50 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:51 pm CDT.

How long on average sun shines in October?

In Champaign, the average sunshine duration in October is 6.2h.

How high is the UV index in October?

The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Champaign, IL

Average temperature in October - Champaign, IL
  • Average high temperature in October: 63.5°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 (31.8°F).

  • Average low temperature in October: 47.8°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in October
Champaign, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Champaign, IL

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

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in October
Champaign, IL

Average humidity in October - Champaign, IL
  • Average humidity in October: 70%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

Average rainfall in October
Champaign, IL

Average rainfall in October - Champaign, IL
  • Average rainfall in October: 1.5"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

Average rainfall days in October
Champaign, IL

Average rainfall days in October - Champaign, IL
  • Average rainfall days in October: 10.6 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

Average snowfall in October
Champaign, IL

Average snowfall in October - Champaign, IL
  • Average snowfall in October: 0"

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in October
Champaign, IL

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

The month with the highest number of snowfall days is January (8.7 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
Champaign, IL

Average daylight in October / Average sunshine in October - Champaign, 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 24min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in October
Champaign, IL

Average sunshine days in October - Champaign, IL
  • Average sunshine days in October: 18.5 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in October
Champaign, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Champaign, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in October
Champaign, IL

Average visibility in October - Champaign, 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).

Champaign, Illinois, USA

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