December weather forecast
Chatham, KY

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Weather in December

The first month of the winter, December, is also a wintry month in Chatham, Kentucky, with an average temperature fluctuating between 31.1°F (-0.5°C) and 42.1°F (5.6°C).

Temperature

The onset of December entails a temperature shift, as the average high-temperature decreases from a fresh 51.8°F (11°C) in November to an icy 42.1°F (5.6°C). In December, the nighttime temperature lowers to an average of 31.1°F (-0.5°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 81%.

Rainfall

In Chatham, in December, during 13.1 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Chatham, during the entire year, the rain falls for 171.5 days and collects up to 32.6" (828mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Chatham, in December, during 7.6 snowfall days, 1.57" (40mm) of snow is typically accumulated. Throughout the year, there are 33.5 snowfall days, and 9.41" (239mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:35 am and sunset at 5:14 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:24 pm EST.

Sunshine

In December, the average sunshine is 4.2h.

UV index

January, February, November 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 low health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

An average high-temperature, in December, in Chatham, is 42.1°F (5.6°C) and the average low-temperature is 31.1°F (-0.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 91.4°F (33°C).

What is the most humid month?

February and December, with an average relative humidity of 81%, are most humid months.

What is the average humidity in December?

In Chatham, the average relative humidity in December is 81%.

How many days does it rain in December?

In Chatham, during December, the rain falls for 13.1 days and regularly aggregates up to 2.87" (73mm) of precipitation.

How much does it snow in December?

In Chatham, during December, snow falls for 7.6 days and regularly aggregates up to 1.57" (40mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Chatham have in December?

In December, the average day length is 9h and 31min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:35 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:24 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.2h.

When is the lowest UV index?

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

How high is the UV index in December?

In Chatham, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
Chatham, KY

Average temperature in December - Chatham, KY
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

Average pressure in December
Chatham, KY

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

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Chatham, KY

Average wind speed in December - Chatham, KY
  • Average wind speed in December: 8.1mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in December
Chatham, KY

Average humidity in December - Chatham, KY
  • Average humidity in December: 81%

The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September, October and November (76%).

Average rainfall in December
Chatham, KY

Average rainfall in December - Chatham, KY
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in December
Chatham, KY

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

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (10.2 days).

Average snowfall in December
Chatham, KY

Average snowfall in December - Chatham, KY
  • Average snowfall in December: 1.57"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Chatham, KY

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

The month with the highest number of snowfall days is January (9.8 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
Chatham, KY

Average daylight in December / Average sunshine in December - Chatham, KY
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in December
Chatham, KY

Average sunshine days in December - Chatham, KY
  • Average sunshine days in December: 12.2 days

The month with the most sunshine days is October (17.5 days).
The months with the least sunshine days are May and June (9.8 days).

Average UV index in December
Chatham, KY

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

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

Average cloud cover in December
Chatham, KY

Average cloud cover in December - Chatham, KY
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Chatham, KY

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

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

Chatham, Kentucky, USA

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