December weather forecast
Eleroy, IL

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Weather in December

December, the first month of the winter in Eleroy, is also a subzero cold month, with temperature in the range of an average low of 21.4°F (-5.9°C) and an average high of 31.6°F (-0.2°C).

Temperature

Welcoming December, Eleroy observes a shift in the average high-temperature, falling from November's frosty 43.9°F (6.6°C) to a subzero cold 31.6°F (-0.2°C). An average low-temperature of 21.4°F (-5.9°C) is recorded during the nights in December in Eleroy.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Eleroy, during December, the rain falls for 7.4 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Eleroy, during the entire year, the rain falls for 145.9 days and collects up to 22.8" (579mm) of precipitation.

Snowfall

Months with snowfall in Eleroy are January through April, October through December. In Eleroy, in December, during 11.3 snowfall days, 2.52" (64mm) of snow is typically accumulated. Throughout the year, there are 50.1 snowfall days, and 13.62" (346mm) of snow is accumulated.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of December, in Eleroy, Illinois, sunrise is at 7:28 am and sunset at 4:36 pm CST.

Sunshine

In Eleroy, Illinois, the average sunshine in December is 4h.

UV index

The months with the lowest UV index in Eleroy are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 in December interprets into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Eleroy in December?

The average high-temperature and low-temperature in Eleroy during December are 31.6°F (-0.2°C) and 21.4°F (-5.9°C) respectively.

What is the average humidity in December in Eleroy?

In December, the average relative humidity in Eleroy, Illinois, is 83%.

How much does it rain in Eleroy in December?

In December, in Eleroy, the rain falls for 7.4 days. Throughout December, 1.1" (28mm) of precipitation is accumulated.

How much does it snow in Eleroy in December?

In Eleroy, in December, snow falls for 11.3 days, with typically accumulated 2.52" (64mm) of snow.

What is the month with the shortest days in Eleroy?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Eleroy, Illinois.

What is the average length of the day in December in Eleroy?

In December, the average day length is 9h and 8min.

When are sunrise and sunset in December in Eleroy?

On the first day of December, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:36 pm CST.

How many hours of sunshine does Eleroy have in December?

In December, the average sunshine duration in Eleroy is 4h.

What is the month with the lowest UV index in Eleroy?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Eleroy, Illinois.

How high is the UV index in December in Eleroy?

In Eleroy, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health 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 December
Eleroy, IL

Average temperature in December - Eleroy, IL
  • Average high temperature in December: 31.6°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).

  • Average low temperature in December: 21.4°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

Average pressure in December
Eleroy, IL

Average pressure in December - Eleroy, IL
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Eleroy, IL

Average wind speed in December - Eleroy, IL
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in December
Eleroy, IL

Average humidity in December - Eleroy, IL
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).

Average rainfall in December
Eleroy, IL

Average rainfall in December - Eleroy, IL
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in December
Eleroy, IL

Average rainfall days in December - Eleroy, IL
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).

Average snowfall in December
Eleroy, IL

Average snowfall in December - Eleroy, IL
  • Average snowfall in December: 2.52"

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Eleroy, IL

Average snowfall days in December - Eleroy, IL
  • Average snowfall days in December: 11.3 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Eleroy, IL

Average daylight in December / Average sunshine in December - Eleroy, IL
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 0min

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

Average sunshine days in December
Eleroy, IL

Average sunshine days in December - Eleroy, IL
  • Average sunshine days in December: 15.3 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in December
Eleroy, IL

Average UV index in December - Eleroy, IL
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Eleroy, IL

Average cloud cover in December - Eleroy, IL
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in December
Eleroy, IL

Average visibility in December - Eleroy, IL
  • Average visibility in December: 6mi

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

Eleroy, Illinois, USA

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