December weather forecast
Saint John, ND

Share

Weather in December

The first month of the winter, December, is also a subzero cold month in Saint John, North Dakota, with temperature in the range of an average high of 16.7°F (-8.5°C) and an average low of 5.9°F (-14.5°C).

Temperature

As November transitions into December, Saint John sees a clear drop in the average high-temperature, declining from a wintry 32.2°F (0.1°C) to a subzero cold 16.7°F (-8.5°C). Throughout the December nights, Saint John encounters a low-temperature of 5.9°F (-14.5°C).

Humidity

In December, the average relative humidity is 91%.

Rainfall

In December, the rain falls for 2.7 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 110.9 rainfall days, and 17.95" (456mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Saint John, during December, snow falls for 15.7 days and regularly aggregates up to 3.98" (101mm) of snow. Throughout the year, there are 86.8 snowfall days, and 23.78" (604mm) of snow is accumulated.

Daylight

With an average of 8h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 8:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 4:51 pm CST.

Sunshine

In Saint John, the average sunshine in December is 3.2h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 1 in December translates into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In Saint John, in December, the average high-temperature is 16.7°F (-8.5°C), and the average low-temperature is 5.9°F (-14.5°C).

What is the average humidity in December in Saint John?

In Saint John, North Dakota, the average relative humidity in December is 91%.

How many days does it rain in December?

In Saint John, in December, during 2.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How much does it snow in Saint John in December?

In Saint John, during December, snow falls for 15.7 days and regularly aggregates up to 3.98" (101mm) of snow.

What is the month with the shortest days in Saint John?

The month with the shortest days is December, with an average of 8h and 18min of daylight.

What is the average length of the day in December in Saint John?

In Saint John, North Dakota, the average day length in December is 8h and 19min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 8:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 4:51 pm CST.

How many hours of sunshine does Saint John have in December?

In Saint John, the average sunshine duration in December is 3.2h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Saint John, North Dakota, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from 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 December
Saint John, ND

Average temperature in December - Saint John, ND
  • Average high temperature in December: 16.7°F

The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is January (14.2°F).

  • Average low temperature in December: 5.9°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (0.5°F).

Average pressure in December
Saint John, ND

Average pressure in December - Saint John, ND
  • Average pressure in December: 30.13"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 December
Saint John, ND

Average wind speed in December - Saint John, ND
  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is October (11mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in December
Saint John, ND

Average humidity in December - Saint John, ND
  • Average humidity in December: 91%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (60%).

Average rainfall in December
Saint John, ND

Average rainfall in December - Saint John, ND
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is February (0.43").

Average rainfall days in December
Saint John, ND

Average rainfall days in December - Saint John, ND
  • Average rainfall days in December: 2.7 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2 days).

Average snowfall in December
Saint John, ND

Average snowfall in December - Saint John, ND
  • Average snowfall in December: 3.98"

The month with the highest snowfall is November (4.29").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Saint John, ND

Average snowfall days in December - Saint John, ND
  • Average snowfall days in December: 15.7 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 December /
Average sunshine in December
Saint John, ND

Average daylight in December / Average sunshine in December - Saint John, ND
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in December
Saint John, ND

Average sunshine days in December - Saint John, ND
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is June (8.1 days).

Average UV index in December
Saint John, ND

Average UV index in December - Saint John, ND
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in December
Saint John, ND

Average cloud cover in December - Saint John, ND
  • Average cloud cover in December: 67

The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in December
Saint John, ND

Average visibility in December - Saint John, 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).

Saint John, North Dakota, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location