December weather forecast
Barrington, IL

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Weather in December

December wraps up the year in Barrington, Illinois with traditionally winter weather conditions, characterized by cold temperatures and significant amount of snowfall at 3.46" (88mm) experienced over 11.7 days. Dolling up under a white blanket of snow, December in this town turns into a picturesque sight. As compared to January, December has lower daylight hours but similar snowfall trends. Overall, the weather in December is an embodiment of winter’s magnificence, making it the perfect time for embracing snow-based activities and the festive spirit of holiday season.

Temperature

Stepping into December, Barrington observes a temperature decline, with the average high falling from November's frosty 45.1°F (7.3°C) to an icy 33.4°F (0.8°C). Barrington experiences an average low-temperature of 23.9°F (-4.5°C) in month of December.

Humidity

In Barrington, Illinois, the average relative humidity in December is 81%.

Rainfall

In Barrington, during December, the rain falls for 8.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Barrington, during the entire year, the rain falls for 163.1 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Barrington. In Barrington, in December, during 11.7 snowfall days, 3.46" (88mm) of snow is typically accumulated. Throughout the year, in Barrington, there are 55.5 snowfall days, and 22.95" (583mm) of snow is accumulated.

Daylight

The month with the shortest days in Barrington is December, with an average of 9h and 12min of daylight.
On the first day of December in Barrington, sunrise is at 7:02 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:30 pm CST.

Sunshine

In December, the average sunshine in Barrington is 4h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

How cold is December in Barrington?

In Barrington, in December, the average high-temperature is 33.4°F (0.8°C), and the average low-temperature is 23.9°F (-4.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in December in Barrington?

In December, the average relative humidity is 81%.

How much does it rain in Barrington in December?

In Barrington, Illinois, during December, the rain falls for 8.8 days and regularly aggregates up to 1.65" (42mm) of precipitation.

How much does it snow in Barrington in December?

In Barrington, Illinois, in December, during 11.7 snowfall days, 3.46" (88mm) of snow is typically accumulated.

What is the month with the shortest days in Barrington?

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

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

The average day length in December in Barrington is 9h and 10min.

What time are sunrise and sunset in December in Barrington?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:30 pm CST.

How many hours of sunshine does Barrington have in December?

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

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

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

What is the UV index intensity in December in Barrington?

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

Average temperature in December - Barrington, 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 (27.7°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in December
Barrington, IL

Average pressure in December - Barrington, 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
Barrington, IL

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

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in December
Barrington, IL

Average humidity in December - Barrington, IL
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in December
Barrington, IL

Average rainfall in December - Barrington, IL
  • Average rainfall in December: 1.65"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in December
Barrington, IL

Average rainfall days in December - Barrington, IL
  • Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in December
Barrington, IL

Average snowfall in December - Barrington, IL
  • Average snowfall in December: 3.46"

The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Barrington, IL

Average snowfall days in December - Barrington, IL
  • Average snowfall days in December: 11.7 days

The month with the highest number of snowfall days is January (15.5 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
Barrington, IL

Average daylight in December / Average sunshine in December - Barrington, 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: 4h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
Barrington, IL

Average sunshine days in December - Barrington, IL
  • Average sunshine days in December: 13.9 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).

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Average UV index in December
Barrington, IL

Average UV index in December - Barrington, 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
Barrington, IL

Average cloud cover in December - Barrington, IL
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).

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Average visibility in December
Barrington, IL

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

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

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Barrington, Illinois, USA

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