December weather forecast
Mandan, ND

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Scenic fields and vast spaces laden with green trees and shrubs in this place near the Mandan Community of North Dakota
Scenic fields and vast spaces laden with green trees and shrubs in this place near the Mandan Community of North Dakota

Weather in December

December in Mandan is in the heart of the winter season with freezing average temperatures ranging between 11.3°F (-11.5°C) and 23°F (-5°C). Moreover, it receives the highest snowfall in the year, seeing 3.31" (84mm) on average. Daylight is scarce, with longer nights setting in, significantly affecting visibility. Despite the prevalent harsh winds and biting cold, the winter charm of Mandan shines through encapsulating the year-end spirit.

Temperature

December's arrival in Mandan, North Dakota, witnesses a distinct temperature drop, receding from November's cold 38.5°F (3.6°C) to a freezing cold 23°F (-5°C). The average low-temperature of 11.3°F (-11.5°C) is witnessed during December.

Humidity

In December, the average relative humidity in Mandan, North Dakota, is 87%.

Rainfall

In Mandan, in December, during 2.9 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Mandan, during the entire year, the rain falls for 94.3 days and collects up to 14.29" (363mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 12.8 days and accumulates 3.31" (84mm) of snow.

Daylight

December has the shortest days of the year in Mandan, with an average of 8h and 36min of daylight.
On the first day of December, sunrise is at 8:08 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 5:05 pm CST.

Sunshine

The average sunshine in December is 4.1h.

UV index

November and December, with an average maximum UV index of 1, are months with the lowest UV index in Mandan. 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: In December, the average maximum UV index of 1 translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold is December in Mandan?

In Mandan, 23°F (-5°C) is the average high-temperature and 11.3°F (-11.5°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 84.2°F (29°C).

What is the average humidity in December in Mandan?

In Mandan, the average relative humidity in December is 87%.

How many days does it rain in December in Mandan?

In Mandan, North Dakota, during December, the rain falls for 2.9 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When does it snow the most in Mandan?

The month with the most snowfall in Mandan, North Dakota, is December, when snow falls for 12.8 days and typically aggregates up to 3.31" (84mm) of snow.

How many days does it snow in December in Mandan?

In Mandan, North Dakota, during December, snow falls for 12.8 days and regularly aggregates up to 3.31" (84mm) of snow.

What is the month with the shortest days in Mandan?

With an average of 8h and 36min of daylight, December has the shortest days of the year.

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

The average day length in December in Mandan is 8h and 37min.

What time are sunrise and sunset in December in Mandan?

In December, on the first day of the month, sunrise is at 8:08 am and sunset at 4:56 pm. On the last day of the month, in Mandan, sunrise is at 8:28 am and sunset at 5:05 pm CST.

How long on average sun shines in December in Mandan?

The average sunshine duration in December in Mandan, North Dakota, is 4.1h.

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

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

What is the UV index reading in December in Mandan?

In December, the average daily maximum UV index in Mandan, North Dakota, is 1. 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
Mandan, ND

Average temperature in December - Mandan, ND
  • Average high temperature in December: 23°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in December: 11.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

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Average pressure in December
Mandan, ND

Average pressure in December - Mandan, ND
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Mandan, ND

Average wind speed in December - Mandan, ND
  • Average wind speed in December: 9.8mph

The windiest months (with the highest average wind speed) are April and October (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in December
Mandan, ND

Average humidity in December - Mandan, ND
  • Average humidity in December: 87%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in December
Mandan, ND

Average rainfall in December - Mandan, ND
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in December
Mandan, ND

Average rainfall days in December - Mandan, ND
  • Average rainfall days in December: 2.9 days

The month with the highest number of rainy days is June (13.1 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in December
Mandan, ND

Average snowfall in December - Mandan, ND
  • Average snowfall in December: 3.31"

The month with the highest snowfall is December (3.31").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Mandan, ND

Average snowfall days in December - Mandan, ND
  • Average snowfall days in December: 12.8 days

The month with the highest number of snowfall days is December (12.8 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
Mandan, ND

Average daylight in December / Average sunshine in December - Mandan, ND
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in December
Mandan, ND

Average sunshine days in December - Mandan, ND
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (14.6 days).

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Average UV index in December
Mandan, ND

Average UV index in December - Mandan, ND
  • 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 November and December (UV index 1).

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Average cloud cover in December
Mandan, ND

Average cloud cover in December - Mandan, ND
  • Average cloud cover in December: 58

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in December
Mandan, ND

Average visibility in December - Mandan, ND
  • Average visibility in December: 5mi

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

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Mandan, North Dakota, USA

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