December weather forecast
Newark, IL

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Weather in December

December, the first month of the winter in Newark, is also a wintry month, with an average temperature varying between 34.7°F (1.5°C) and 24.8°F (-4°C).

Temperature

Newark's average high-temperature decreases in December, falling from a frosty 46.8°F (8.2°C) in November to a wintry 34.7°F (1.5°C). Newark's temperature tends to fall to an average low of 24.8°F (-4°C) during the nights of December.

Humidity

In Newark, the average relative humidity in December is 82%.

Rainfall

In December, in Newark, Illinois, the rain falls for 4.7 days. Throughout December, 0.43" (11mm) of precipitation is accumulated. In Newark, Illinois, during the entire year, the rain falls for 97.4 days and collects up to 8.07" (205mm) of precipitation.

Snowfall

Months with snowfall in Newark, Illinois, are January through April, October through December. In December, in Newark, Illinois, it is snowing for 4.8 days. Throughout December, 0.31" (8mm) of snow is accumulated. In Newark, during the entire year, snow falls for 26.1 days and aggregates up to 3.54" (90mm) of snow.

Daylight

December has the shortest days of the year in Newark, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:02 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:34 pm CST.

Sunshine

In December, the average sunshine is 4.2h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is it in Newark in December?

The high-temperature in Newark during December is 34.7°F (1.5°C) and the low-temperature is 24.8°F (-4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 87.8°F (31°C).

What is the average humidity in December in Newark?

The average relative humidity in December in Newark is 82%.

How many days does it rain in December in Newark?

In December, in Newark, the rain falls for 4.7 days. Throughout December, 0.43" (11mm) of precipitation is accumulated.

How much does it snow in Newark in December?

In December, it is snowing for 4.8 days. Throughout December, 0.31" (8mm) of snow is accumulated.

What is the month with the shortest days in Newark?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

How many hours of daylight does Newark have in December?

In Newark, the average day length in December is 9h and 14min.

What time are sunrise and sunset in December in Newark?

On the first day of December, sunrise is at 7:02 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:34 pm CST.

How long on average sun shines in December in Newark?

In Newark, the average sunshine duration in December is 4.2h.

When is the lowest UV index in Newark?

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

What is the UV index intensity in December in Newark?

In December, the average daily maximum UV index in Newark, Illinois, is 1. A UV Index of 2, and less, symbolizes a low health risk 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
Newark, IL

Average temperature in December - Newark, IL
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in December: 24.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in December
Newark, IL

Average pressure in December - Newark, IL
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Newark, IL

Average wind speed in December - Newark, IL
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in December
Newark, IL

Average humidity in December - Newark, IL
  • Average humidity in December: 82%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in December
Newark, IL

Average rainfall in December - Newark, IL
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").

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Average rainfall days in December
Newark, IL

Average rainfall days in December - Newark, IL
  • Average rainfall days in December: 4.7 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).

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Average snowfall in December
Newark, IL

Average snowfall in December - Newark, IL
  • Average snowfall in December: 0.31"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Newark, IL

Average snowfall days in December - Newark, IL
  • Average snowfall days in December: 4.8 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Newark, IL

Average sunshine days in December - Newark, IL
  • Average sunshine days in December: 23 days

The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).

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Average UV index in December
Newark, IL

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in December
Newark, IL

Average cloud cover in December - Newark, IL
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in December
Newark, IL

Average visibility in December - Newark, 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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Newark, Illinois, USA

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