December weather forecast
Harris, TN

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Weather in December

The first month of the winter, December, is still a chilly month in Harris, Tennessee, with an average temperature varying between 47.3°F (8.5°C) and 35.4°F (1.9°C).

Temperature

December signifies a gentle decline in Harris's average high-temperature, easing from a refreshing 56.1°F (13.4°C) in November to a chilly 47.3°F (8.5°C). Throughout December, Harris encounters an average temperature drop to an icy 35.4°F (1.9°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

In December, the rain falls for 12.5 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Harris, during the entire year, the rain falls for 163.4 days and collects up to 39.76" (1010mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Harris, in December, snow falls for 1.6 days, with typically accumulated 0.63" (16mm) of snow. In Harris, during the entire year, snow falls for 11.5 days and aggregates up to 5.43" (138mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:49 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:07 am and sunset at 4:50 pm CST.

Sunshine

In Harris, Tennessee, the average sunshine in December is 4.8h.

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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

December temperatures vary between a high-temperature of 47.3°F (8.5°C) and a low-temperature of 35.4°F (1.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 86°F (30°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Harris, during December, the rain falls for 12.5 days and regularly aggregates up to 3.27" (83mm) of precipitation.

How much does it snow in December?

In Harris, during December, snow falls for 1.6 days and regularly aggregates up to 0.63" (16mm) of snow.

What is the month with the shortest days?

With an average of 9h and 42min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 9h and 43min.

When is the sunrise / sunset in December in Harris?

In December, on the first day of the month, sunrise is at 6:49 am and sunset at 4:40 pm. On the last day of the month, in Harris, sunrise is at 7:07 am and sunset at 4:50 pm CST.

How long on average sun shines in December?

In Harris, the average sunshine duration in December is 4.8h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Harris, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes 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
Harris, TN

Average temperature in December - Harris, TN
  • Average high temperature in December: 47.3°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.2°F).

  • Average low temperature in December: 35.4°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in December
Harris, TN

Average pressure in December - Harris, TN
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Harris, TN

Average wind speed in December - Harris, TN
  • Average wind speed in December: 8.6mph

The windiest months (with the highest average wind speed) are January, February, March and April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in December
Harris, TN

Average humidity in December - Harris, TN
  • Average humidity in December: 78%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Harris, TN

Average rainfall in December - Harris, TN
  • Average rainfall in December: 3.27"

The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in December
Harris, TN

Average rainfall days in December - Harris, TN
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (10.1 days).

Average snowfall in December
Harris, TN

Average snowfall in December - Harris, TN
  • Average snowfall in December: 0.63"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Harris, TN

Average snowfall days in December - Harris, TN
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Harris, TN

Average daylight in December / Average sunshine in December - Harris, TN
  • Average daylight in December: 9h and 4min

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

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in December
Harris, TN

Average sunshine days in December - Harris, TN
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Harris, TN

Average UV index in December - Harris, TN
  • 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
Harris, TN

Average cloud cover in December - Harris, TN
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in December
Harris, TN

Average visibility in December - Harris, TN
  • 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).

Harris, Tennessee, USA

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