October weather forecast
Bloomington, IL

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Weather in October

October brings typical autumnal charm to Bloomington, Illinois with cooler temperatures and a noticeable shortening of daylight hours. Bloomington's cityscape transforms into a canvas of warm hues as the leaves begin to change. The relatively clear skies are home to crisp and cool breezes that hint at the nearing winter. Rainfall occurs less frequently, leading to mostly dry and fresh weather. By the close of October, the city is fully immersed in the vibrant landscapes of fall.

Temperature

A shift in Bloomington's weather is observed as September turns into October, with the average high temperature reducing from a moderately hot 75.7°F (24.3°C) to a comfortable 62.2°F (16.8°C). October nights in Bloomington are marked by an average low-temperature of 46.6°F (8.1°C).

Humidity

With an average relative humidity of 71%, October is the least humid month.

Rainfall

In Bloomington, during October, the rain falls for 10.8 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 140.6 rainfall days, and 22.44" (570mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. October is the first month it typically snows in Bloomington. Throughout October, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Bloomington, there are 35.4 snowfall days, and 9.45" (240mm) of snow is accumulated.

Daylight

The average length of the day in October in Bloomington is 11h and 7min.
On the first day of the month, sunrise is at 6:53 am and sunset at 6:37 pm. On the last day of October, in Bloomington, sunrise is at 7:25 am and sunset at 5:53 pm CDT.

Sunshine

In October, the average sunshine in Bloomington is 5.8h.

UV index

In October, the average daily maximum UV index in Bloomington is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 3 during October leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature in Bloomington?

The high-temperature, in October, in Bloomington, records 62.2°F (16.8°C), while the low-temperature is 46.6°F (8.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the least humid month in Bloomington?

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

What is the average humidity in October in Bloomington?

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

How much does it rain in Bloomington in October?

In October, the rain falls for 10.8 days. Throughout October, 1.89" (48mm) of precipitation is accumulated.

When does it start to snow in Bloomington?

October is the first month it typically snows in Bloomington. Throughout October, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Bloomington have in October?

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

When is the sunrise / sunset in October in Bloomington?

In October, on the first day of the month, sunrise is at 6:53 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:53 pm CDT.

How many hours of sunshine does Bloomington have in October?

In October, the average sunshine duration is 5.8h.

What is the UV index reading in October in Bloomington?

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Bloomington, IL

Average temperature in October - Bloomington, IL
  • Average high temperature in October: 62.2°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in October: 46.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in October
Bloomington, IL

Average pressure in October - Bloomington, 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
Bloomington, IL

Average wind speed in October - Bloomington, IL
  • Average wind speed in October: 9.8mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in October
Bloomington, IL

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

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Bloomington, IL

Average rainfall in October - Bloomington, IL
  • Average rainfall in October: 1.89"

The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in October
Bloomington, IL

Average rainfall days in October - Bloomington, IL
  • Average rainfall days in October: 10.8 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in October
Bloomington, IL

Average snowfall in October - Bloomington, IL
  • Average snowfall in October: 0.04"

The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Bloomington, IL

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

The month with the highest number of snowfall days is January (11.5 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
Bloomington, IL

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

The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in October
Bloomington, IL

Average sunshine days in October - Bloomington, IL
  • Average sunshine days in October: 17.4 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.7 days).

Average UV index in October
Bloomington, IL

Average UV index in October - Bloomington, 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
Bloomington, IL

Average cloud cover in October - Bloomington, IL
  • Average cloud cover in October: 39

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in October
Bloomington, IL

Average visibility in October - Bloomington, 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).

Bloomington, Illinois, USA

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