December weather forecast
Elgin, IL

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Weather in December

December in Elgin brings with it a climatic close to the year. Winter fully sets in, throttling down temperatures to a low average of 23.4°F (-4.8°C). The month introduces high possibilities of snowfall, leading to striking winter scenes. Long nights paired with short days, the city's vibrancy is replaced by a serene quietness. As the year ends, the city remains illuminated by festive lights, bringing warmth and a cheerful vibe against the characteristic cold weather of December.

Temperature

With the onset of December, Elgin experiences a modest temperature adjustment, with the average high-temperature receding from a chilly 45.1°F (7.3°C) in November to an icy 33.4°F (0.8°C). Elgin sees an average low-temperature of 23.4°F (-4.8°C) during December.

Humidity

In December, the average relative humidity is 82%.

Rainfall

The month with the least rainfall in Elgin is December, when the rain falls for 8.1 days and typically collects 1.1" (28mm) of precipitation.

Snowfall

Months with snowfall in Elgin are January through May, October through December. In December, it is snowing for 10.5 days. Throughout December, 2.2" (56mm) of snow is accumulated. Throughout the year, there are 47.4 snowfall days, and 13.07" (332mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Elgin, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:02 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:31 pm CST.

Sunshine

In December, the average sunshine is 3.9h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Elgin. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a broad brim is indispensable, filtering out up to half of UV rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Elgin in December?

In December, in Elgin, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 23.4°F (-4.8°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the average humidity in December in Elgin?

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

What is the driest month in Elgin?

December is the month with the least rainfall in Elgin. Rain falls for 8.1 days and accumulates 1.1" (28mm) of precipitation.

How much does it rain in Elgin in December?

In Elgin, Illinois, in December, during 8.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

How much does it snow in Elgin in December?

In December, it is snowing for 10.5 days. Throughout December, 2.2" (56mm) of snow is accumulated.

What is the month with the shortest days in Elgin?

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

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

In Elgin, Illinois, the average day length in December is 9h and 11min.

When are sunrise and sunset in December in Elgin?

On the first day of December in Elgin, sunrise is at 7:02 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:31 pm CST.

How many hours of sunshine does Elgin have in December?

In December, the average sunshine duration in Elgin, Illinois, is 3.9h.

When is the lowest UV index in Elgin?

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

What is the UV index reading in December in Elgin?

The average daily maximum UV index in December in Elgin, Illinois, is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Elgin, IL

Average temperature in December - Elgin, IL
  • Average high temperature in December: 33.4°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in December: 23.4°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

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Average pressure in December
Elgin, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Elgin, IL

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

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in December
Elgin, IL

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

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in December
Elgin, IL

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

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in December
Elgin, IL

Average rainfall days in December - Elgin, IL
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in December
Elgin, IL

Average snowfall in December - Elgin, IL
  • Average snowfall in December: 2.2"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Elgin, IL

Average snowfall days in December - Elgin, IL
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is January (12.9 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
Elgin, IL

Average daylight in December / Average sunshine in December - Elgin, 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 12min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in December
Elgin, IL

Average sunshine days in December - Elgin, IL
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in December
Elgin, IL

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

The months with the highest UV index are July and August (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
Elgin, IL

Average cloud cover in December - Elgin, IL
  • Average cloud cover in December: 60

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).

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Average visibility in December
Elgin, IL

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

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

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Elgin, Illinois, USA

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