December weather forecast
Barrington Hills, IL

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Weather in December

December, the first month of the winter in Barrington Hills, is still a cold month, with an average temperature varying between 33.3°F (0.7°C) and 23.2°F (-4.9°C).

Temperature

Barrington Hills in December undergoes a mild reduction in the average high-temperature, shifting from November's chilly 45.1°F (7.3°C) to a wintry 33.3°F (0.7°C). Barrington Hills, during December, witnesses an average low-temperature of 23.2°F (-4.9°C).

Humidity

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

Rainfall

The month with the least rainfall is December, when the rain falls for 6.5 days and typically collects 0.67" (17mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, in Barrington Hills, Illinois, it is snowing for 9.1 days. Throughout December, 1.06" (27mm) of snow is accumulated. Throughout the year, in Barrington Hills, there are 43.2 snowfall days, and 7.4" (188mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December in Barrington Hills, Illinois, sunrise is at 7:02 am and sunset at 4:21 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 in Barrington Hills is 3.9h.

UV index

The months with the lowest UV index in Barrington Hills are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a regular UV index of 1 translates into these guidelines:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. To guard against the harmful effects of the Sun, minimize exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold is it in Barrington Hills in December?

In Barrington Hills, in December, the average high-temperature is 33.3°F (0.7°C), and the average low-temperature is 23.2°F (-4.9°C).

What is the average humidity in December in Barrington Hills?

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

What is the driest month in Barrington Hills?

The month with the least rainfall in Barrington Hills is December, when the rain falls for 6.5 days and typically collects 0.67" (17mm) of precipitation.

How much does it rain in Barrington Hills in December?

In Barrington Hills, Illinois, in December, during 6.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How much does it snow in Barrington Hills in December?

In Barrington Hills, Illinois, in December, snow falls for 9.1 days, with typically accumulated 1.06" (27mm) of snow.

What is the month with the shortest days in Barrington Hills?

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

How many hours of daylight does Barrington Hills have in December?

In Barrington Hills, the average day length in December is 9h and 10min.

When are sunrise and sunset in December in Barrington Hills?

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

How long on average sun shines in December in Barrington Hills?

In December, the average sunshine duration is 3.9h.

What are the months with the lowest UV index in Barrington Hills?

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

What is the UV index reading in December in Barrington Hills?

The average daily maximum UV index in December in Barrington Hills, Illinois, is 1. A UV Index value 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
Barrington Hills, IL

Average temperature in December - Barrington Hills, IL
  • Average high temperature in December: 33.3°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in December: 23.2°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in December
Barrington Hills, IL

Average pressure in December - Barrington Hills, 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 Hills, IL

Average wind speed in December - Barrington Hills, IL
  • Average wind speed in December: 9.2mph

The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in December
Barrington Hills, IL

Average humidity in December - Barrington Hills, IL
  • Average humidity in December: 82%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).

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Average rainfall in December
Barrington Hills, IL

Average rainfall in December - Barrington Hills, IL
  • Average rainfall in December: 0.67"

The wettest months (with the highest rainfall) are April and August (1.89").
The driest month (with the least rainfall) is December (0.67").

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Average rainfall days in December
Barrington Hills, IL

Average rainfall days in December - Barrington Hills, IL
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall in December
Barrington Hills, IL

Average snowfall in December - Barrington Hills, IL
  • Average snowfall in December: 1.06"

The month with the highest snowfall is January (2.01").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Barrington Hills, IL

Average snowfall days in December - Barrington Hills, IL
  • Average snowfall days in December: 9.1 days

The month with the highest number of snowfall days is January (12.2 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 Hills, IL

Average daylight in December / Average sunshine in December - Barrington Hills, 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: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
Barrington Hills, IL

Average sunshine days in December - Barrington Hills, IL
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (10.7 days).

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Average UV index in December
Barrington Hills, IL

Average UV index in December - Barrington Hills, IL
  • Average UV index in December: 1

The month with the highest UV index is 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
Barrington Hills, IL

Average cloud cover in December - Barrington Hills, IL
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 32).

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Average visibility in December
Barrington Hills, IL

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

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

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Barrington Hills, Illinois, USA

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