December weather forecast
New Athens, IL

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Weather in December

The first month of the winter, December, is also a frosty month in New Athens, Illinois, with an average temperature fluctuating between 43.3°F (6.3°C) and 31.1°F (-0.5°C).

Temperature

As December arrives, New Athens's weather displays a decrease in high-temperatures, transitioning from November's cool 53.6°F (12°C) to a frosty 43.3°F (6.3°C). During the month of December, the temperature in New Athens, Illinois, generally drops to a low average of 31.1°F (-0.5°C).

Humidity

In New Athens, the average relative humidity in December is 77%.

Rainfall

In December, in New Athens, Illinois, the rain falls for 8.9 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 154.1 rainfall days, and 35.28" (896mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in New Athens. In New Athens, in December, snow falls for 3.3 days, with typically accumulated 0.87" (22mm) of snow. In New Athens, during the entire year, snow falls for 18.2 days and aggregates up to 6.38" (162mm) of snow.

Daylight

The month with the shortest days in New Athens is December, with an average of 9h and 30min of daylight.
On the first day of December in New Athens, sunrise is at 6:58 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:49 pm CST.

Sunshine

The average sunshine in December in New Athens is 4.9h.

UV index

The months with the lowest UV index in New Athens, Illinois, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The UV index of 2 in December translates into these instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold in New Athens?

In New Athens, in December, the average high-temperature is 43.3°F (6.3°C), and the average low-temperature is 31.1°F (-0.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is computed to be 95°F (35°C).

What is the average humidity in December in New Athens?

In December, the average relative humidity is 77%.

How many days does it rain in December in New Athens?

In New Athens, Illinois, in December, during 8.9 rainfall days, 2.44" (62mm) of precipitation is typically accumulated.

How much does it snow in New Athens in December?

In December, in New Athens, it is snowing for 3.3 days. Throughout December, 0.87" (22mm) of snow is accumulated.

What is the month with the shortest days in New Athens?

December has the shortest days of the year in New Athens, Illinois, with an average of 9h and 30min of daylight.

What is the average length of the day in December in New Athens?

In New Athens, Illinois, the average day length in December is 9h and 33min.

When are sunrise and sunset in December in New Athens?

In December, on the first day of the month, sunrise is at 6:58 am and sunset at 4:39 pm. On the last day of the month, in New Athens, Illinois, sunrise is at 7:16 am and sunset at 4:49 pm CST.

How long on average sun shines in December in New Athens?

In December, the average sunshine duration in New Athens is 4.9h.

When is the lowest UV index in New Athens?

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

What is the UV index intensity in December in New Athens?

In New Athens, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat 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
New Athens, IL

Average temperature in December - New Athens, IL
  • Average high temperature in December: 43.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in December
New Athens, IL

Average pressure in December - New Athens, IL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
New Athens, IL

Average wind speed in December - New Athens, IL
  • Average wind speed in December: 8.7mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in December
New Athens, IL

Average humidity in December - New Athens, IL
  • Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
New Athens, IL

Average rainfall in December - New Athens, IL
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.85").

Average rainfall days in December
New Athens, IL

Average rainfall days in December - New Athens, IL
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
New Athens, IL

Average snowfall in December - New Athens, IL
  • Average snowfall in December: 0.87"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
New Athens, IL

Average snowfall days in December - New Athens, IL
  • Average snowfall days in December: 3.3 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

Average daylight in December /
Average sunshine in December
New Athens, IL

Average daylight in December / Average sunshine in December - New Athens, IL
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in December
New Athens, IL

Average sunshine days in December - New Athens, IL
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in December
New Athens, IL

Average UV index in December - New Athens, 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).

Average cloud cover in December
New Athens, IL

Average cloud cover in December - New Athens, IL
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in December
New Athens, IL

Average visibility in December - New Athens, IL
  • Average visibility in December: 6mi

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

New Athens, Illinois, USA

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