December weather forecast
Regan, ND

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Weather in December

The first month of the winter, December, is still a freezing cold month in Regan, North Dakota, with an average temperature fluctuating between 10.6°F (-11.9°C) and 22.3°F (-5.4°C).

Temperature

The shift from November to December sees a distinct decrease in the average high-temperature, dropping from a wintry 37.6°F (3.1°C) to a freezing cold 22.3°F (-5.4°C). The average temperature drops to an extreme cold 10.6°F (-11.9°C) during the night in the month of December.

Humidity

The average relative humidity in December is 87%.

Rainfall

In Regan, in December, it is raining for 2.9 days, with typically 0.67" (17mm) of accumulated precipitation. In Regan, during the entire year, the rain falls for 100.5 days and collects up to 15.2" (386mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Regan, North Dakota. In December, it is snowing for 14.5 days. Throughout December, 3.7" (94mm) of snow is accumulated. Throughout the year, there are 72.6 snowfall days, and 21.14" (537mm) of snow is accumulated.

Daylight

With an average of 8h and 36min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 8:08 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 5:02 pm CST.

Sunshine

In Regan, the average sunshine in December is 3.9h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

During December, Regan experiences an average high-temperature of 22.3°F (-5.4°C) and a low-temperature of 10.6°F (-11.9°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 82.4°F (28°C).

What is the average humidity in December?

The average relative humidity in December is 87%.

How many days does it rain in December?

In December, the rain falls for 2.9 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in December?

In Regan, in December, during 14.5 snowfall days, 3.7" (94mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 8h and 36min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 8h and 34min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 8:08 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 5:02 pm CST.

How many hours of sunshine does Regan have in December?

The average sunshine duration in December is 3.9h.

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

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

How high is the UV index in December?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat 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
Regan, ND

Average temperature in December - Regan, ND
  • Average high temperature in December: 22.3°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (19.8°F).

  • Average low temperature in December: 10.6°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

Average pressure in December
Regan, ND

Average pressure in December - Regan, 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
Regan, ND

Average wind speed in December - Regan, ND
  • Average wind speed in December: 10.1mph

The windiest months (with the highest average wind speed) are April and October (11.1mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).

Average humidity in December
Regan, ND

Average humidity in December - Regan, ND
  • Average humidity in December: 87%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (55%).

Average rainfall in December
Regan, ND

Average rainfall in December - Regan, ND
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is February (0.51").

Average rainfall days in December
Regan, ND

Average rainfall days in December - Regan, ND
  • Average rainfall days in December: 2.9 days

The month with the highest number of rainy days is June (14.9 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in December
Regan, ND

Average snowfall in December - Regan, ND
  • Average snowfall in December: 3.7"

The month with the highest snowfall is January (3.78").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Regan, ND

Average snowfall days in December - Regan, ND
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Regan, ND

Average daylight in December / Average sunshine in December - Regan, ND
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in December
Regan, ND

Average sunshine days in December - Regan, ND
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (12.8 days).

Average UV index in December
Regan, ND

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

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

Average cloud cover in December
Regan, ND

Average cloud cover in December - Regan, ND
  • Average cloud cover in December: 60

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in December
Regan, ND

Average visibility in December - Regan, 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).

Regan, North Dakota, USA

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