December weather forecast
East Peoria, IL

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Weather in December

The first month of the winter, December, is also an icy month in East Peoria, Illinois, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 36.5°F (2.5°C).

Temperature

The shift to December brings a decrease in the average high-temperature, falling from a chilly 48.4°F (9.1°C) in November to an icy 36.5°F (2.5°C). An average low-temperature of 26.1°F (-3.3°C) is observed in East Peoria during the December nights.

Humidity

In East Peoria, the average relative humidity in December is 80%.

Rainfall

In East Peoria, during December, the rain falls for 6.2 days and regularly aggregates up to 0.87" (22mm) of precipitation. In East Peoria, Illinois, 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. In East Peoria, in December, snow falls for 5.9 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 26.7 snowfall days, and 7.09" (180mm) of snow is accumulated.

Daylight

December has the shortest days of the year in East Peoria, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:03 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:41 pm CST.

Sunshine

In East Peoria, the average sunshine in December is 4.4h.

UV index

The months with the lowest UV index in East Peoria are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

How cold is December in East Peoria?

In East Peoria, in December, the average high-temperature is 36.5°F (2.5°C), and the average low-temperature is 26.1°F (-3.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 87.8°F (31°C).

What is the average humidity in December in East Peoria?

The average relative humidity in December in East Peoria, Illinois, is 80%.

How much does it rain in East Peoria in December?

In East Peoria, in December, it is raining for 6.2 days, with typically 0.87" (22mm) of accumulated precipitation.

How many days does it snow in December in East Peoria?

In East Peoria, in December, during 5.9 snowfall days, 1.18" (30mm) of snow is typically accumulated.

What is the month with the shortest days in East Peoria?

The month with the shortest days in East Peoria is December, with an average of 9h and 18min of daylight.

How many hours of daylight does East Peoria have in December?

In East Peoria, the average day length in December is 9h and 19min.

When are sunrise and sunset in December in East Peoria?

On the first day of December, sunrise is at 7:03 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:41 pm CST.

How many hours of sunshine does East Peoria have in December?

In East Peoria, Illinois, the average sunshine duration in December is 4.4h.

When is the lowest UV index in East Peoria?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in East Peoria, Illinois.

How high is the UV index in December in East Peoria?

In December, the average daily maximum UV index in East Peoria is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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 December
East Peoria, IL

Average temperature in December - East Peoria, IL
  • Average high temperature in December: 36.5°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 December: 26.1°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 December
East Peoria, IL

Average pressure in December - East Peoria, IL
  • Average pressure in December: 30.11"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 December
East Peoria, IL

Average wind speed in December - East Peoria, IL
  • Average wind speed in December: 9.8mph

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 December
East Peoria, IL

Average humidity in December - East Peoria, IL
  • Average humidity in December: 80%

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 December
East Peoria, IL

Average rainfall in December - East Peoria, IL
  • Average rainfall in December: 0.87"

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 December
East Peoria, IL

Average rainfall days in December - East Peoria, IL
  • Average rainfall days in December: 6.2 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 December
East Peoria, IL

Average snowfall in December - East Peoria, IL
  • Average snowfall in December: 1.18"

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 December
East Peoria, IL

Average snowfall days in December - East Peoria, IL
  • Average snowfall days in December: 5.9 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 December /
Average sunshine in December
East Peoria, IL

Average daylight in December / Average sunshine in December - East Peoria, IL
  • Average daylight in December: 9h and 2min

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 December: 4h and 2min

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 December
East Peoria, IL

Average sunshine days in December - East Peoria, IL
  • Average sunshine days in December: 19.5 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 December
East Peoria, IL

Average UV index in December - East Peoria, IL
  • Average UV index in December: 2

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 December
East Peoria, IL

Average cloud cover in December - East Peoria, IL
  • Average cloud cover in December: 52

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 December
East Peoria, IL

Average visibility in December - East Peoria, IL
  • Average visibility in December: 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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East Peoria, Illinois, USA

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