December weather forecast
Royalton, KY

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Weather in December

The first month of the winter, December, is also a frosty month in Royalton, Kentucky, with an average temperature fluctuating between 33.1°F (0.6°C) and 45.1°F (7.3°C).

Temperature

The transition into December subtly indicates a reduction in the average high-temperature, down to a chilly 45.1°F (7.3°C) from November's cool 53.8°F (12.1°C). An average nighttime temperature of 33.1°F (0.6°C) is observed during December.

Humidity

The months with the highest humidity in Royalton are February and December, with an average relative humidity of 80%.

Rainfall

In Royalton, in December, it is raining for 13.1 days, with typically 3.27" (83mm) of accumulated precipitation. In Royalton, during the entire year, the rain falls for 178.7 days and collects up to 34.8" (884mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Royalton. In Royalton, during December, snow falls for 7.6 days and regularly aggregates up to 2.95" (75mm) of snow. Throughout the year, there are 37.5 snowfall days, and 15.43" (392mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:29 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:47 am and sunset at 5:23 pm EST.

Sunshine

In Royalton, the average sunshine in December is 4.4h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 2 in December translates into this advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What are December temperatures in Royalton?

December temperatures in Royalton, Kentucky, vary between a high-temperature of 45.1°F (7.3°C) and a low-temperature of 33.1°F (0.6°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 96.8°F (36°C).

What are the most humid months in Royalton?

The months with the highest humidity are February and December, with an average relative humidity of 80%.

What is the average humidity in December in Royalton?

The average relative humidity in December in Royalton, Kentucky, is 80%.

How many days does it rain in December in Royalton?

In Royalton, Kentucky, during December, the rain falls for 13.1 days and regularly aggregates up to 3.27" (83mm) of precipitation.

How much does it snow in Royalton in December?

In Royalton, in December, snow falls for 7.6 days, with typically accumulated 2.95" (75mm) of snow.

What is the month with the shortest days in Royalton?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

How many hours of daylight does Royalton have in December?

The average day length in December in Royalton is 9h and 37min.

What time are sunrise and sunset in December in Royalton?

On the first day of December in Royalton, Kentucky, sunrise is at 7:29 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:23 pm EST.

How many hours of sunshine does Royalton have in December?

The average sunshine duration in December in Royalton, Kentucky, is 4.4h.

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

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Royalton.

What is the UV index intensity in December in Royalton?

In December, the average daily maximum UV index in Royalton, Kentucky, is 2. A UV Index of 2, and less, symbolizes a low health risk 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, KY

Average temperature in December - Royalton, KY
  • Average high temperature in December: 45.1°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in December
Royalton, KY

Average pressure in December - Royalton, KY
  • Average pressure in December: 30.14"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in December
Royalton, KY

Average wind speed in December - Royalton, KY
  • Average wind speed in December: 6.4mph

The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
Royalton, KY

Average humidity in December - Royalton, KY
  • Average humidity in December: 80%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and November (74%).

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Average rainfall in December
Royalton, KY

Average rainfall in December - Royalton, KY
  • Average rainfall in December: 3.27"

The wettest month (with the highest rainfall) is February (3.7").
The driest month (with the least rainfall) is September (2.01").

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Average rainfall days in December
Royalton, KY

Average rainfall days in December - Royalton, KY
  • Average rainfall days in December: 13.1 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (11.6 days).

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Average snowfall in December
Royalton, KY

Average snowfall in December - Royalton, KY
  • Average snowfall in December: 2.95"

The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Royalton, KY

Average snowfall days in December - Royalton, KY
  • Average snowfall days in December: 7.6 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Royalton, KY
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in December
Royalton, KY

Average sunshine days in December - Royalton, KY
  • Average sunshine days in December: 12 days

The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is February (9.3 days).

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Average UV index in December
Royalton, KY

Average UV index in December - Royalton, KY
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in December
Royalton, KY

Average cloud cover in December - Royalton, KY
  • Average cloud cover in December: 55

The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in December
Royalton, KY

Average visibility in December - Royalton, KY
  • Average visibility in December: 5mi

The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).

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Royalton, Kentucky, USA

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