December weather forecast
Danville, IL

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Weather in December

December, the first month of the winter in Danville, is still a cold month, with an average temperature varying between 37.6°F (3.1°C) and 27.5°F (-2.5°C).

Temperature

A shift in the average high-temperature occurs in December, reducing from a chilly 48.9°F (9.4°C) in November to a wintry 37.6°F (3.1°C). The average low-temperature, in December, in Danville, is a subzero cold 27.5°F (-2.5°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 8.8 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. In Danville, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Danville. In December, it is snowing for 7.9 days. Throughout December, 2.09" (53mm) of snow is accumulated. In Danville, during the entire year, snow falls for 35.2 days and aggregates up to 8.82" (224mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:25 pm. On the last day of December, in Danville, sunrise is at 7:12 am and sunset at 4:35 pm CST.

Sunshine

The average sunshine in December is 4.5h.

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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 2 in December transforms into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

How cold is December in Danville?

The average high-temperature, in December, in Danville, is 37.6°F (3.1°C), while the average low-temperature is 27.5°F (-2.5°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is estimated at 86°F (30°C).

What is the average humidity in December in Danville?

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

How much does it rain in Danville in December?

In Danville, in December, it is raining for 8.8 days, with typically 1.46" (37mm) of accumulated precipitation.

How many days does it snow in December in Danville?

In Danville, in December, snow falls for 7.9 days, with typically accumulated 2.09" (53mm) of snow.

What is the month with the shortest days in Danville?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

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

The average day length in December in Danville, Illinois, is 9h and 22min.

When is the sunrise / sunset in December in Danville?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:25 pm. On the last day of the month, in Danville, sunrise is at 7:12 am and sunset at 4:35 pm CST.

How long on average sun shines in December in Danville?

In Danville, Illinois, the average sunshine duration in December is 4.5h.

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

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

What is the UV index reading in December in Danville?

In December, the average daily maximum UV index in Danville, Illinois, is 2. A UV Index of 2, and less, symbolizes 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
Danville, IL

Average temperature in December - Danville, IL
  • Average high temperature in December: 37.6°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 27.5°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 (20.5°F).

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Average pressure in December
Danville, IL

Average pressure in December - Danville, IL
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Danville, IL

Average wind speed in December - Danville, IL
  • Average wind speed in December: 9.7mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in December
Danville, IL

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

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Danville, IL

Average rainfall in December - Danville, IL
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").

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Average rainfall days in December
Danville, IL

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

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).

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Average snowfall in December
Danville, IL

Average snowfall in December - Danville, IL
  • Average snowfall in December: 2.09"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Danville, IL

Average snowfall days in December - Danville, IL
  • Average snowfall days in December: 7.9 days

The month with the highest number of snowfall days is January (10.6 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
Danville, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in December
Danville, IL

Average sunshine days in December - Danville, IL
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in December
Danville, IL

Average UV index in December - Danville, 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
Danville, IL

Average cloud cover in December - Danville, IL
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).

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Average visibility in December
Danville, IL

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

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