October weather forecast
Peoria, IL

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Street lights and tall buildings in the city of Peoria, Illinois, as well as the night sky reflected in the waterfront
Street lights and tall buildings in the city of Peoria, Illinois, as well as the night sky reflected in the waterfront

Weather in October

As Peoria moves further into fall, October brings a significant drop in temperatures and a discernible chill in the air. The change in weather from the preceding summer season is evident, with shorter days and longer nights. Concurrently, the city becomes a vibrant canvas of colors, with trees transitioning their wardrobe to shades of red, orange, and yellow. Despite the lowered temperatures, the increased wind speed, coupled with the reduced humidity, introduces a sharp, crisp feel to the air. The city comes alive with pumpkin patches, corn mazes, and Halloween festivities, ingraining October with its own unique charm.

Temperature

Peoria's average high-temperature decreases in October, falling from a moderately hot 76.1°F (24.5°C) in September to an enjoyable 62.1°F (16.7°C). During the nights in October, the temperature in Peoria averages to a frosty 46.4°F (8°C).

Humidity

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

Rainfall

In Peoria, in October, it is raining for 10.3 days, with typically 1.46" (37mm) of accumulated precipitation. In Peoria, during the entire year, the rain falls for 129.2 days and collects up to 17.24" (438mm) 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 0.08" (2mm) of snow. In Peoria, during the entire year, snow falls for 26.7 days and aggregates up to 7.09" (180mm) of snow.

Daylight

In October, the average length of the day in Peoria is 11h and 7min.
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 5:55 pm CDT.

Sunshine

In October, the average sunshine is 5.9h.

UV index

The average daily maximum UV index in October in Peoria is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In October, a regular UV index of 3 translates into these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What are October temperatures in Peoria?

During October, Peoria experiences an average high-temperature of 62.1°F (16.7°C) and a low-temperature of 46.4°F (8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 87.8°F (31°C).

What is the least humid month in Peoria?

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

What is the average humidity in October in Peoria?

The average relative humidity in October in Peoria, Illinois, is 71%.

How many days does it rain in October in Peoria?

In October, in Peoria, the rain falls for 10.3 days. Throughout October, 1.46" (37mm) of precipitation is accumulated.

When does it start to snow in Peoria?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Peoria have in October?

The average day length in October in Peoria is 11h and 7min.

When is the sunrise / sunset in October in Peoria?

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

How long on average sun shines in October in Peoria?

The average sunshine duration in October in Peoria, Illinois, is 5.9h.

What is the UV index intensity in October in Peoria?

In Peoria, Illinois, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe 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
Peoria, IL

Average temperature in October - Peoria, IL
  • Average high temperature in October: 62.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in October: 46.4°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in October
Peoria, IL

Average pressure in October - Peoria, 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 (29.91"Hg).

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Average wind speed in October
Peoria, IL

Average wind speed in October - Peoria, 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).

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Average humidity in October
Peoria, IL

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

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in October
Peoria, IL

Average rainfall in October - Peoria, IL
  • Average rainfall in October: 1.46"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in October
Peoria, IL

Average rainfall days in October - Peoria, IL
  • Average rainfall days in October: 10.3 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).

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Average snowfall in October
Peoria, IL

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

The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Peoria, IL

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

The month with the highest number of snowfall days is January (9 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
Peoria, IL

Average daylight in October / Average sunshine in October - Peoria, 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: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in October
Peoria, IL

Average sunshine days in October - Peoria, IL
  • Average sunshine days in October: 19.4 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in October
Peoria, IL

Average UV index in October - Peoria, 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).

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Average cloud cover in October
Peoria, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in October
Peoria, IL

Average visibility in October - Peoria, 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).

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Peoria, Illinois, USA

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