December weather forecast
Allenville, IL

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Weather in December

The first month of the winter, December, is still a cold month in Allenville, Illinois, with an average temperature varying between 28.4°F (-2°C) and 38.8°F (3.8°C).

Temperature

Allenville in December demonstrates a small temperature transition, adjusting from an average high of a frosty 49.8°F (9.9°C) in November to a cold 38.8°F (3.8°C). During the month of December, an average temperature of 28.4°F (-2°C) is noted during the nights in Allenville, Illinois.

Humidity

The average relative humidity in December in Allenville is 79%.

Rainfall

In Allenville, Illinois, during December, the rain falls for 7.5 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Allenville, during the entire year, the rain falls for 130.9 days and collects up to 15.43" (392mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Allenville, Illinois, during December, snow falls for 4.5 days and regularly aggregates up to 0.91" (23mm) of snow. In Allenville, during the entire year, snow falls for 21.5 days and aggregates up to 4.53" (115mm) of snow.

Daylight

December has the shortest days of the year in Allenville, with an average of 9h and 24min of daylight.
On the first day of December in Allenville, sunrise is at 6:56 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:40 pm CST.

Sunshine

The average sunshine in December in Allenville is 4.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Allenville?

The high-temperature in Allenville, Illinois, during December is 38.8°F (3.8°C) and the low-temperature is 28.4°F (-2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in December in Allenville?

In December, the average relative humidity in Allenville is 79%.

How much does it rain in Allenville in December?

In Allenville, during December, the rain falls for 7.5 days and regularly aggregates up to 0.87" (22mm) of precipitation.

How much does it snow in Allenville in December?

In Allenville, in December, during 4.5 snowfall days, 0.91" (23mm) of snow is typically accumulated.

What is the month with the shortest days in Allenville?

With an average of 9h and 24min of daylight, December has the shortest days of the year in Allenville, Illinois.

How many hours of daylight does Allenville have in December?

In December, the average day length in Allenville, Illinois, is 9h and 26min.

When are sunrise and sunset in December in Allenville?

On the first day of December, sunrise is at 6:56 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:40 pm CST.

How many hours of sunshine does Allenville have in December?

In Allenville, the average sunshine duration in December is 4.6h.

What are the months with the lowest UV index in Allenville?

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

How high is the UV index in December in Allenville?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Allenville, IL

Average temperature in December - Allenville, IL
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 28.4°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in December
Allenville, IL

Average pressure in December - Allenville, IL
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Allenville, IL

Average wind speed in December - Allenville, IL
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in December
Allenville, IL

Average humidity in December - Allenville, IL
  • Average humidity in December: 79%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in December
Allenville, IL

Average rainfall in December - Allenville, IL
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is June (1.85").
The driest month (with the least rainfall) is February (0.71").

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Average rainfall days in December
Allenville, IL

Average rainfall days in December - Allenville, IL
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (5.9 days).

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Average snowfall in December
Allenville, IL

Average snowfall in December - Allenville, IL
  • Average snowfall in December: 0.91"

The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Allenville, IL

Average snowfall days in December - Allenville, IL
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Allenville, IL
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in December
Allenville, IL

Average sunshine days in December - Allenville, IL
  • Average sunshine days in December: 19.8 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in December
Allenville, IL

Average UV index in December - Allenville, 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
Allenville, IL

Average cloud cover in December - Allenville, IL
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Allenville, IL

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

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