December weather forecast
New Douglas, IL

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Weather in December

The first month of the winter, December, is also a wintry month in New Douglas, Illinois, with an average temperature varying between 40.3°F (4.6°C) and 29.1°F (-1.6°C).

Temperature

The shift from November to December involves a decrease in the average high-temperature, dropping from a cool 51.6°F (10.9°C) to an icy 40.3°F (4.6°C). New Douglas's nights in December cool down to an average low-temperature of 29.1°F (-1.6°C).

Humidity

In New Douglas, the average relative humidity in December is 78%.

Rainfall

In New Douglas, in December, during 6.7 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In New Douglas, during the entire year, the rain falls for 121.4 days and collects up to 14.72" (374mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in New Douglas. The month with the most snowfall in New Douglas is December, when snow falls for 3.8 days and typically aggregates up to 0.98" (25mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December in New Douglas, sunrise is at 6:59 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:46 pm CST.

Sunshine

In December, the average sunshine in New Douglas is 4.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in New Douglas. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is it in New Douglas in December?

In New Douglas, 40.3°F (4.6°C) is the average high-temperature and 29.1°F (-1.6°C) is the average low-temperature during December. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 91.4°F (33°C).

What is the average humidity in December in New Douglas?

In December, the average relative humidity in New Douglas, Illinois, is 78%.

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

In New Douglas, in December, it is raining for 6.7 days, with typically 0.87" (22mm) of accumulated precipitation.

What is the snowiest month in New Douglas?

The month with the most snowfall is December, when snow falls for 3.8 days and typically aggregates up to 0.98" (25mm) of snow.

How much does it snow in New Douglas in December?

In December, in New Douglas, it is snowing for 3.8 days. Throughout December, 0.98" (25mm) of snow is accumulated.

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

The month with the shortest days in New Douglas, Illinois, is December, with an average of 9h and 30min of daylight.

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

In New Douglas, Illinois, the average day length in December is 9h and 29min.

What time are sunrise and sunset in December in New Douglas?

On the first day of December in New Douglas, sunrise is at 6:59 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:46 pm CST.

How many hours of sunshine does New Douglas have in December?

In December, the average sunshine duration is 4.8h.

When is the lowest UV index in New Douglas?

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

How high is the UV index in December in New Douglas?

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

Average temperature in December - New Douglas, IL
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in December: 29.1°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in December
New Douglas, IL

Average pressure in December - New Douglas, 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 (29.92"Hg).

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Average wind speed in December
New Douglas, IL

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

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity in December
New Douglas, IL

Average humidity in December - New Douglas, IL
  • Average humidity in December: 78%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
New Douglas, IL

Average rainfall in December - New Douglas, IL
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in December
New Douglas, IL

Average rainfall days in December - New Douglas, IL
  • Average rainfall days in December: 6.7 days

The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in December
New Douglas, IL

Average snowfall in December - New Douglas, IL
  • Average snowfall in December: 0.98"

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

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Average snowfall days in December
New Douglas, IL

Average snowfall days in December - New Douglas, IL
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (6.3 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
New Douglas, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in December
New Douglas, IL

Average sunshine days in December - New Douglas, IL
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is July (12.5 days).

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Average UV index in December
New Douglas, IL

Average UV index in December - New Douglas, 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
New Douglas, IL

Average cloud cover in December - New Douglas, IL
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).

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Average visibility in December
New Douglas, IL

Average visibility in December - New Douglas, 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).

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New Douglas, Illinois, USA

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