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 fluctuating between 6.1°F (-14.4°C) and 26.2°F (-3.2°C).

Temperature

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

Humidity

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

Rainfall

In Bismarck, during December, the rain falls for 7.6 days and regularly aggregates up to 0.5" (12.4mm) of precipitation. In Bismarck, North Dakota, during the entire year, the rain falls for 97.7 days and collects up to 17.9" (453.4mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. The month with the most snowfall in Bismarck is December when snow falls for 10 days and typically aggregates up to 9.3" (236.2mm) of snow.

Daylight

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

Sunshine

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

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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, 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?

In December, the average relative humidity in Bismarck is 74.5%.

How many days does it rain in December in Bismarck?

In December, the rain falls for 7.6 days. Throughout December, 0.5" (12.4mm) of precipitation is accumulated.

How much does it snow in Bismarck in December?

In Bismarck, in December, snow falls for 10 days, with typically accumulated 9.3" (236.2mm) of snow.

What is the snowiest month in Bismarck?

December is the month with the most snowfall. 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.

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

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

What is the month with the least sunshine in Bismarck?

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

How long on average sun shines in December in Bismarck?

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

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

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

How high is the UV index in December in Bismarck?

In December, the average daily maximum UV index in Bismarck is 1. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.
Average temperature in December - Bismarck, ND
  • Average high temperature in December: 26.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in December: 6.1°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (2.2°F).

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: 0.5"

The wettest month (with the highest rainfall) is June (3.2").
The driest month (with the lowest rainfall) is January (0.4").

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: 9.3"

The month with the highest snowfall is December (9.3").
Months with the lowest snowfall are June, July and August (0").

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).