December weather forecast
Bismarck, IL

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Weather in December

The first month of the winter, December, is also a wintry month in Bismarck, Illinois, with an average temperature ranging between max 37.6°F (3.1°C) and min 27.5°F (-2.5°C).

Temperature

In Bismarck, the average high-temperature in December drops from a frosty 48.9°F (9.4°C) in November to a cold 37.6°F (3.1°C). Bismarck encounters a steady low-temperature average of 27.5°F (-2.5°C) throughout the month of December.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Bismarck, in December, it is raining for 8.8 days, with typically 1.46" (37mm) of accumulated precipitation. In Bismarck, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 7.9 days. Throughout December, 2.09" (53mm) of snow is accumulated. Throughout the year, in Bismarck, there are 35.2 snowfall days, and 8.82" (224mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Bismarck, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:24 pm. On the last day of December, in Bismarck, sunrise is at 7:12 am and sunset at 4:34 pm CST.

Sunshine

The average sunshine in December is 4.5h.

UV index

The months with the lowest UV index in Bismarck are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 2 during December translates into the following guidance:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold does it get in Bismarck in December?

The average high-temperature, in December, in Bismarck, 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. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in December in Bismarck?

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

How many days does it rain in December in Bismarck?

In Bismarck, Illinois, in December, during 8.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

How many days does it snow in December in Bismarck?

In December, in Bismarck, it is snowing for 7.9 days. Throughout December, 2.09" (53mm) of snow is accumulated.

What is the month with the shortest days in Bismarck?

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

How many hours of daylight does Bismarck have in December?

In Bismarck, Illinois, the average day length in December is 9h and 22min.

What time are sunrise and sunset in December in Bismarck?

On the first day of December, sunrise is at 6:54 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:34 pm CST.

How many hours of sunshine does Bismarck have in December?

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

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

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

How high is the UV index in December in Bismarck?

In December, the average daily maximum UV index in Bismarck is 2. A UV Index reading of 2, and below, represents 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
Bismarck, IL

Average temperature in December - Bismarck, 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
Bismarck, IL

Average pressure in December - Bismarck, 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
Bismarck, IL

Average wind speed in December - Bismarck, 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
Bismarck, IL

Average humidity in December - Bismarck, 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
Bismarck, IL

Average rainfall in December - Bismarck, 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
Bismarck, IL

Average rainfall days in December - Bismarck, 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
Bismarck, IL

Average snowfall in December - Bismarck, 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
Bismarck, IL

Average snowfall days in December - Bismarck, 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
Bismarck, IL

Average daylight in December / Average sunshine in December - Bismarck, 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
Bismarck, IL

Average sunshine days in December - Bismarck, 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
Bismarck, IL

Average UV index in December - Bismarck, 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
Bismarck, IL

Average cloud cover in December - Bismarck, 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
Bismarck, IL

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

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