January weather forecast
Napoleon, ND

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Weather in January

January, the same as December, in Napoleon, North Dakota, is a freezing cold winter month, with an average temperature varying between 6.1°F (-14.4°C) and 20.8°F (-6.2°C).

Temperature

January, known for its average high temperature of 20.8°F (-6.2°C) and an average low temperature of 6.1°F (-14.4°C), is the coldest month.

Humidity

January is the most humid month, 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

Months with snowfall in Napoleon are January through May, October through December. In January, it is snowing for 14.8 days. Throughout January, 3.58" (91mm) of snow is accumulated. Throughout the year, in Napoleon, there are 73.7 snowfall days, and 23.11" (587mm) of snow is accumulated.

Daylight

In Napoleon, the average length of the day in January is 9h and 5min.
On the first day of January, sunrise is at 8:22 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:40 pm CST.

Sunshine

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

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 1 suggests this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What time of the year is the coldest in Napoleon?

January, known for its average high temperature of 20.8°F (-6.2°C) and an average low temperature of 6.1°F (-14.4°C), is the coldest month in Napoleon.

How cold is it in Napoleon in January?

January temperatures vary between a 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 in Napoleon?

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

What is the average humidity in January in Napoleon?

In January, the average relative humidity is 89%.

What is the driest month in Napoleon?

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

How much does it rain in Napoleon in January?

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

How much does it snow in Napoleon in January?

In Napoleon, North Dakota, in January, during 14.8 snowfall days, 3.58" (91mm) of snow is typically accumulated.

What is the average length of the day in January in Napoleon?

The average day length in January is 9h and 5min.

When is the sunrise / sunset in January in Napoleon?

On the first day of January, sunrise is at 8:22 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:40 pm CST.

What is the month with the least sunshine in Napoleon?

With an average of 3.8h of sunshine, January has the least sunshine of the year in Napoleon, North Dakota.

How long on average sun shines in January in Napoleon?

In January, the average sunshine duration is 3.8h.

What is the month with the lowest UV index in Napoleon?

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 Napoleon?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
23.2°F -4.9°C
20.8°F -6.2°C
22.3°F -5.4°C
Average low temperature
11.3°F -11.5°C
6.1°F -14.4°C
7.9°F -13.4°C
Average pressure
30.14" 766mmHg
30.15" 766mmHg
30.17" 766mmHg
Average wind speed
9.6mph 15.4km/h
9.9mph 15.9km/h
8.9mph 14.3km/h
Average max. wind speed
10.2mph 16.4km/h
10.6mph 17.1km/h
9.4mph 15.1km/h
Average wind speed gusts
16.2mph 26.1km/h
17mph 27.4km/h
14.7mph 23.7km/h
Average humidity
86%
89%
87%
Average rainfall
0.75" 19mm
0.59" 15mm
0.67" 17mm
Average rainfall days
3.6
4
3.4
Average snowfall
3.98" 101mm
3.58" 91mm
4.33" 110mm
Average snowfall days
15.7
14.8
15
Average daylight
8h 4min
9h 1min
10h 2min
Average sunshine
4h 0min
3h 5min
4h 4min
Average sunshine days
14.1
13.8
12.6
Average UV index
1
1
2
Average cloud cover
58%
59%
60%
Average visibility
5mi 8km
5mi 8km
5mi 8km

Average temperature in January
Napoleon, ND

Average temperature in January - Napoleon, 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).

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Average pressure in January
Napoleon, ND

Average pressure in January - Napoleon, 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).

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Average wind speed in January
Napoleon, ND

Average wind speed in January - Napoleon, 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).

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Average humidity in January
Napoleon, ND

Average humidity in January - Napoleon, 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%).

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Average rainfall in January
Napoleon, ND

Average rainfall in January - Napoleon, 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").

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Average rainfall days in January
Napoleon, ND

Average rainfall days in January - Napoleon, 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).

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Average snowfall in January
Napoleon, ND

Average snowfall in January - Napoleon, 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").

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Average snowfall days in January
Napoleon, ND

Average snowfall days in January - Napoleon, 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).

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

Average daylight in January / Average sunshine in January - Napoleon, ND
  • Average daylight in January: 9h and 1min

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 42min).

  • 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).

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Average sunshine days in January
Napoleon, ND

Average sunshine days in January - Napoleon, 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).

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Average UV index in January
Napoleon, ND

Average UV index in January - Napoleon, 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).

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Average cloud cover in January
Napoleon, ND

Average cloud cover in January - Napoleon, 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).

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Average visibility in January
Napoleon, ND

Average visibility in January - Napoleon, 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).

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Napoleon, North Dakota, USA

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