December weather forecast
Royalton, MN

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Weather in December

The first month of the winter, December, is also a subzero cold month in Royalton, Minnesota, with an average temperature fluctuating between 23°F (-5°C) and 12.6°F (-10.8°C).

Temperature

The onset of December brings a distinct decrease in the average high-temperature, receding from a cold 37.8°F (3.2°C) in November to a freezing cold 23°F (-5°C). Throughout the month of December, the average temperature dips to an extreme cold 12.6°F (-10.8°C) at night.

Humidity

In Royalton, Minnesota, the average relative humidity in December is 88%.

Rainfall

In Royalton, during December, the rain falls for 3.2 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 109.2 rainfall days, and 17.64" (448mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 14.7 days and typically aggregates up to 4.76" (121mm) of snow.

Daylight

December has the shortest days of the year, with an average of 8h and 42min of daylight.
On the first day of December, sunrise is at 7:38 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:42 pm CST.

Sunshine

In Royalton, the average sunshine in December is 3.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The high-temperature, in December, in Royalton, is 23°F (-5°C), while the low-temperature averages to 12.6°F (-10.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in July is appraised at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 88%.

How many days does it rain in December?

In Royalton, during December, the rain falls for 3.2 days and regularly aggregates up to 0.91" (23mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 14.7 days and typically aggregates up to 4.76" (121mm) of snow.

How many days does it snow in December?

In Royalton, in December, during 14.7 snowfall days, 4.76" (121mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Royalton.

How many hours of daylight does Royalton have in December?

The average day length in December is 8h and 44min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:38 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:42 pm CST.

How many hours of sunshine does Royalton have in December?

The average sunshine duration in December in Royalton is 3.2h.

When is the lowest UV index in Royalton?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
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
Royalton, MN

Average temperature in December - Royalton, MN
  • Average high temperature in December: 23°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.1°F).

  • Average low temperature in December: 12.6°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).

Average pressure in December
Royalton, MN

Average pressure in December - Royalton, MN
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Royalton, MN

Average wind speed in December - Royalton, MN
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in December
Royalton, MN

Average humidity in December - Royalton, MN
  • Average humidity in December: 88%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (70%).

Average rainfall in December
Royalton, MN

Average rainfall in December - Royalton, MN
  • Average rainfall in December: 0.91"

The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.43").

Average rainfall days in December
Royalton, MN

Average rainfall days in December - Royalton, MN
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (2.5 days).

Average snowfall in December
Royalton, MN

Average snowfall in December - Royalton, MN
  • Average snowfall in December: 4.76"

The month with the highest snowfall is December (4.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Royalton, MN

Average snowfall days in December - Royalton, MN
  • Average snowfall days in December: 14.7 days

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Royalton, MN

Average daylight in December / Average sunshine in December - Royalton, MN
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in December
Royalton, MN

Average sunshine days in December - Royalton, MN
  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in December
Royalton, MN

Average UV index in December - Royalton, MN
  • 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, February, November and December (UV index 1).

Average cloud cover in December
Royalton, MN

Average cloud cover in December - Royalton, MN
  • Average cloud cover in December: 67

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Royalton, MN

Average visibility in December - Royalton, MN
  • 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 and February (4mi).

Royalton, Minnesota, USA

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