December weather forecast
Union Star, KY

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Weather in December

The first month of the winter, December, is still a chilly month in Union Star, Kentucky, with an average temperature varying between 32.5°F (0.3°C) and 44.8°F (7.1°C).

Temperature

December ushers in a minor alteration in Union Star's climate, with the average high-temperature moving from November's cool 53.6°F (12°C) to a chilly 44.8°F (7.1°C). December generally records an average low-temperature of 32.5°F (0.3°C).

Humidity

February and December, with an average relative humidity of 80%, are the most humid months in Union Star.

Rainfall

In Union Star, during December, the rain falls for 9.3 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Union Star, Kentucky, during the entire year, the rain falls for 130.1 days and collects up to 14.72" (374mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Union Star, during December, snow falls for 2.9 days and regularly aggregates up to 0.28" (7mm) of snow. In Union Star, during the entire year, snow falls for 16 days and aggregates up to 2.28" (58mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 6:43 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:01 am and sunset at 4:36 pm CST.

Sunshine

The average sunshine in December in Union Star is 4.4h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 in December translates into this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

What is the temperature in December in Union Star?

In Union Star, in December, the average high-temperature is 44.8°F (7.1°C), and the average low-temperature is 32.5°F (0.3°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 96.8°F (36°C).

What are the most humid months in Union Star?

February and December, with an average relative humidity of 80%, are most humid months.

What is the average humidity in December in Union Star?

In December, the average relative humidity is 80%.

How many days does it rain in December in Union Star?

In Union Star, in December, during 9.3 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

How much does it snow in Union Star in December?

In Union Star, Kentucky, in December, snow falls for 2.9 days, with typically accumulated 0.28" (7mm) of snow.

What is the month with the shortest days in Union Star?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December in Union Star?

The average day length in December in Union Star, Kentucky, is 9h and 35min.

What time are sunrise and sunset in December in Union Star?

In December, on the first day of the month, sunrise is at 6:43 am and sunset at 4:26 pm. On the last day of the month, in Union Star, sunrise is at 7:01 am and sunset at 4:36 pm CST.

How many hours of sunshine does Union Star have in December?

The average sunshine duration in December is 4.4h.

What are the months with the lowest UV index in Union Star?

The months with the lowest UV index in Union Star, Kentucky, are January, February and December, with an average maximum UV index of 2.

How high is the UV index in December in Union Star?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe 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
Union Star, KY

Average temperature in December - Union Star, KY
  • Average high temperature in December: 44.8°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 (39.7°F).

  • Average low temperature in December: 32.5°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in December
Union Star, KY

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Union Star, KY

Average wind speed in December - Union Star, KY
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in December
Union Star, KY

Average humidity in December - Union Star, KY
  • Average humidity in December: 80%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in December
Union Star, KY

Average rainfall in December - Union Star, KY
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is April (1.73").
The driest month (with the least rainfall) is September (0.51").

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Average rainfall days in December
Union Star, KY

Average rainfall days in December - Union Star, KY
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is October (8.1 days).

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Average snowfall in December
Union Star, KY

Average snowfall in December - Union Star, KY
  • Average snowfall in December: 0.28"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Union Star, KY

Average snowfall days in December - Union Star, KY
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Union Star, KY

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

The month with the longest days is June (Average daylight: 14h and 48min).
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 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).

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Average sunshine days in December
Union Star, KY

Average sunshine days in December - Union Star, KY
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.6 days).

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Average UV index in December
Union Star, KY

Average UV index in December - Union Star, 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
Union Star, KY

Average cloud cover in December - Union Star, KY
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Union Star, KY

Average visibility in December - Union Star, KY
  • Average visibility in December: 6mi

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

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Union Star, Kentucky, USA

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