December weather forecast
Salem, KY

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Weather in December

The first month of the winter, December, is still a chilly month in Salem, Kentucky, with an average temperature fluctuating between 33.4°F (0.8°C) and 45.5°F (7.5°C).

Temperature

The shift from November to December involves a decrease in the average high-temperature, from a cool 54.5°F (12.5°C) to a chilly 45.5°F (7.5°C). The nighttime temperature, during December, averages of 33.4°F (0.8°C).

Humidity

In Salem, the average relative humidity in December is 78%.

Rainfall

In Salem, during December, the rain falls for 10.8 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Salem, during the entire year, the rain falls for 148.8 days and collects up to 27.05" (687mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 3.2 days. Throughout December, 0.51" (13mm) of snow is accumulated. In Salem, during the entire year, snow falls for 15 days and aggregates up to 4.8" (122mm) 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 December, sunrise is at 6:48 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:45 pm CST.

Sunshine

The average sunshine in December is 4.8h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

The high-temperature, in December, in Salem, records 45.5°F (7.5°C), while the low-temperature is 33.4°F (0.8°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 95°F (35°C).

What is the average humidity in December?

The average relative humidity in December in Salem is 78%.

How many days does it rain in December?

In Salem, during December, the rain falls for 10.8 days and regularly aggregates up to 2.05" (52mm) of precipitation.

How much does it snow in December?

In December, it is snowing for 3.2 days. Throughout December, 0.51" (13mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 39min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:48 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:45 pm CST.

How long on average sun shines in December?

The average sunshine duration in December is 4.8h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Salem, KY

Average temperature in December - Salem, KY
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in December: 33.4°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average pressure in December
Salem, KY

Average pressure in December - Salem, 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).

Average wind speed in December
Salem, KY

Average wind speed in December - Salem, KY
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Salem, KY

Average humidity in December - Salem, KY
  • Average humidity in December: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Salem, KY

Average rainfall in December - Salem, KY
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in December
Salem, KY

Average rainfall days in December - Salem, KY
  • Average rainfall days in December: 10.8 days

The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in December
Salem, KY

Average snowfall in December - Salem, KY
  • Average snowfall in December: 0.51"

The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Salem, KY

Average snowfall days in December - Salem, KY
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Salem, 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 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in December
Salem, KY

Average sunshine days in December - Salem, KY
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (12.1 days).

Average UV index in December
Salem, KY

Average UV index in December - Salem, 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).

Average cloud cover in December
Salem, KY

Average cloud cover in December - Salem, KY
  • Average cloud cover in December: 49

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).

Average visibility in December
Salem, KY

Average visibility in December - Salem, KY
  • Average visibility in December: 6mi

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

Salem, Kentucky, USA

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