January weather forecast
Bismarck, ND

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The historical building of the State Capitol in Bismarck, North Dakota
The historical building of the State Capitol in Bismarck, North Dakota

Weather in January

January signals the arrival of winter in full force in Bismarck, North Dakota. This month is characterized by its low temperatures, relatively high humidity, and voluminous amounts of snow. The average high temperature and low temperature run from 20.8°F (-6.2°C) to 6.1°F (-14.4°C), accompanied by a significant 3.58" (91mm) of snowfall. Moreover, the strength of winter can fluctuate heavily in this month, with some days experiencing relatively mild conditions and others being subject to more extreme patterns. Additionally, daylight hours are shorter and the sunlight is less powerful, contributing to the cold climate.

Temperature

January stands out as Bismarck's coldest month, with temperatures ranging between an average high of 20.8°F (-6.2°C) and a low of 6.1°F (-14.4°C).

Humidity

The most humid month is January, with an average relative humidity of 89%.

Rainfall

January is the month with the least rainfall. Rain falls for 4 days and accumulates 0.59" (15mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Bismarck, during January, snow falls for 14.8 days and regularly aggregates up to 3.58" (91mm) of snow. In Bismarck, during the entire year, snow falls for 73.7 days and aggregates up to 23.11" (587mm) of snow.

Daylight

In Bismarck, the average length of the day in January is 9h and 3min.
On the first day of January in Bismarck, sunrise is at 8:28 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 5:44 pm CST.

Sunshine

With an average of 3.8h of sunshine, January has the least sunshine of the year.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 1 during January leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

The coldest temperatures in Bismarck occur during January, when averages reach a peak of 20.8°F (-6.2°C) and a low of 6.1°F (-14.4°C).

How cold is January?

During January, Bismarck experiences an average high-temperature of 20.8°F (-6.2°C) and a low-temperature of 6.1°F (-14.4°C).

What is the most humid month?

With an average relative humidity of 89%, January is the most humid month.

What is the average humidity in January?

In January, the average relative humidity is 89%.

What is the driest month in Bismarck?

January is the month with the least rainfall in Bismarck. Rain falls for 4 days and accumulates 0.59" (15mm) of precipitation.

How much does it rain in January?

In Bismarck, during January, the rain falls for 4 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How many days does it snow in January?

In Bismarck, in January, snow falls for 14.8 days, with typically accumulated 3.58" (91mm) of snow.

How many hours of daylight does Bismarck have in January?

The average day length in January is 9h and 3min.

When are sunrise and sunset in January?

On the first day of January in Bismarck, sunrise is at 8:28 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 5:44 pm CST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.8h of sunshine.

How many hours of sunshine does Bismarck have in January?

In Bismarck, the average sunshine duration in January is 3.8h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk 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 January
Bismarck, ND

Average temperature in January - Bismarck, ND
  • Average high temperature in January: 20.8°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (20.8°F).

  • Average low temperature in January: 6.1°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 (6.1°F).

Average pressure in January
Bismarck, ND

Average pressure in January - Bismarck, ND
  • Average pressure in January: 30.15"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).

Average wind speed in January
Bismarck, ND

Average wind speed in January - Bismarck, ND
  • Average wind speed in January: 9.9mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in January
Bismarck, ND

Average humidity in January - Bismarck, ND
  • Average humidity in January: 89%

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

Average rainfall in January
Bismarck, ND

Average rainfall in January - Bismarck, ND
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in January
Bismarck, ND

Average rainfall days in January - Bismarck, ND
  • Average rainfall days in January: 4 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (3.4 days).

Average snowfall in January
Bismarck, ND

Average snowfall in January - Bismarck, ND
  • Average snowfall in January: 3.58"

The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Bismarck, ND

Average snowfall days in January - Bismarck, ND
  • Average snowfall days in January: 14.8 days

The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Bismarck, ND

Average daylight in January / Average sunshine in January - Bismarck, ND
  • Average daylight in January: 9h and 0min

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 January: 3h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in January
Bismarck, ND

Average sunshine days in January - Bismarck, ND
  • Average sunshine days in January: 13.8 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is March (12.3 days).

Average UV index in January
Bismarck, ND

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in January
Bismarck, ND

Average cloud cover in January - Bismarck, ND
  • Average cloud cover in January: 59

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

Average visibility in January
Bismarck, ND

Average visibility in January - Bismarck, ND
  • Average visibility in January: 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).

Bismarck, North Dakota, USA

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