Bismarck
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Bismarck, ND

An across the park view of the historical building of the State Capitol in Bismarck, North Dakota
An across the park view of the historical building of the State Capitol in Bismarck, North Dakota
The first month of the winter, December, is still a freezing cold month in Bismarck, North Dakota, with average temperature varying between 26.2°F (-3.2°C) and 6.1°F (-14.4°C).

Temperature

In December, the average high-temperature drops, from a cold 39.6°F (4.2°C) in November, to a freezing cold 26.2°F (-3.2°C). In Bismarck, North Dakota, the average low-temperature is 6.1°F (-14.4°C).

Humidity

December is the most humid month in Bismarck, with an average relative humidity of 74.5%.

Rainfall

In Bismarck, in December, during 7.6 rainfall days, 0.5" (12.4mm) of precipitation is typically accumulated. In Bismarck, during the entire year, the rain falls for 97.7 days and collects up to 17.9" (453.4mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 10 days and accumulates 9.3" (236.2mm) of snow.

Daylight

December has the shortest days of the year in Bismarck, with an average of 8.6h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 4h of sunshine.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 1 in December interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Bismarck?

In Bismarck, North Dakota, in December, the average high-temperature is 26.2°F (-3.2°C), and the average low-temperature is 6.1°F (-14.4°C).

What is the most humid month in Bismarck?

The most humid month in Bismarck, North Dakota, is December, with an average relative humidity of 74.5%.

What is the average humidity in December in Bismarck?

The average relative humidity in December in Bismarck is 74.5%.

How many days does it rain in December in Bismarck?

In Bismarck, North Dakota, in December, it is raining for 7.6 days, with typically 0.5" (12.4mm) of accumulated precipitation.

How much does it snow in Bismarck in December?

In Bismarck, in December, during 10 snowfall days, 9.3" (236.2mm) of snow is typically accumulated.

What is the snowiest month in Bismarck?

December is the month with the most snowfall in Bismarck. Snow falls for 10 days and accumulates 9.3" (236.2mm) of snow.

What is the month with the shortest days in Bismarck?

The month with the shortest days in Bismarck, North Dakota, is December, with an average of 8.6h of daylight.

How many hours of daylight does Bismarck have in December?

In December, the average length of the day in Bismarck, North Dakota, is 8.6h.

What is the month with the least sunshine in Bismarck?

With an average of 4h of sunshine, December has the least sunshine of the year in Bismarck, North Dakota.

How many hours of sunshine does Bismarck have in December?

In Bismarck, the average sunshine in December is 4h.

When is the lowest UV index in Bismarck?

Months with the lowest UV index in Bismarck are January, November and December, with an average maximum UV index of 1.

What is the UV index intensity in December in Bismarck?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Bismarck, ND
  • Average high temperature in December: -3.2°C

The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (-4.8°C).

  • Average low temperature in December: -14.4°C

The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is January (-16.6°C).

Average humidity in December - Bismarck, ND
  • Average humidity in December: 74.5%

The month with the highest relative humidity is December (74.5%).
The month with the lowest relative humidity is May (60.1%).

Average rainfall in December - Bismarck, ND
  • Average rainfall in December: 12.4mm

The wettest month (with the highest rainfall) is June (80.5mm).
The driest month (with the lowest rainfall) is January (10.9mm).

Average rainfall days in December - Bismarck, ND
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is June (11.2 days).
The month with the lowest number of rainy days is October (6.6 days).

Average snowfall in December - Bismarck, ND
  • Average snowfall in December: 236.2mm

The month with the highest snowfall is December (236.2mm).
Months with the lowest snowfall are June, July and August (0mm).

Average snowfall days in December - Bismarck, ND
  • Average snowfall days in December: 10 days

The month with the highest number of snowfall days is December (10 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in December / Average sunshine in December - Bismarck, ND
  • Average daylight in December: 8.6h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in December: 4h

The month with most sunshine is July (Average sunshine: 11.4h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in December - Bismarck, ND
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).