December weather forecast
Harris Hills, TN

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Weather in December

The first month of the winter, December, is still a cool month in Harris Hills, Tennessee, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 36.5°F (2.5°C).

Temperature

With the onset of December, the average high-temperature subtly recedes from November's moderate 58.8°F (14.9°C) to a cool 50.7°F (10.4°C). During the nights in December, the temperature in Harris Hills averages to a wintry 36.5°F (2.5°C).

Humidity

December is the most humid month, with an average relative humidity of 80%.

Rainfall

December is the month with the most rainfall. Rain falls for 13.5 days and accumulates 4.21" (107mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In December, it is snowing for 1.6 days. Throughout December, 0.31" (8mm) of snow is accumulated. In Harris Hills, during the entire year, snow falls for 9.2 days and aggregates up to 2.09" (53mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:30 am and sunset at 5:29 pm. On the last day of December, in Harris Hills, Tennessee, sunrise is at 7:48 am and sunset at 5:39 pm EST.

Sunshine

With an average of 5h of sunshine, December has the least sunshine of the year.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Boost your sun resistance with garments that are densely woven yet spacious. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Harris Hills in December?

In December, in Harris Hills, the average high-temperature is 50.7°F (10.4°C), and the average low-temperature is 36.5°F (2.5°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the most humid month?

With an average relative humidity of 80%, December is the most humid month.

What is the average humidity in December?

In December, the average relative humidity is 80%.

What is the rainiest month?

The month with the most rainfall is December, when the rain falls for 13.5 days and typically aggregates up to 4.21" (107mm) of precipitation.

How many days does it rain in December?

In Harris Hills, during December, the rain falls for 13.5 days and regularly aggregates up to 4.21" (107mm) of precipitation.

How much does it snow in December?

In Harris Hills, in December, during 1.6 snowfall days, 0.31" (8mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

What is the average length of the day in December?

The average day length in December in Harris Hills is 9h and 51min.

When are sunrise and sunset in December?

On the first day of December in Harris Hills, sunrise is at 7:30 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:39 pm EST.

What is the month with the least sunshine?

With an average of 5h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

In December, the average sunshine duration is 5h.

What are the months with the lowest UV index?

The months with the lowest UV index are January 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 unprotected exposure to 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
Harris Hills, TN

Average temperature in December - Harris Hills, TN
  • Average high temperature in December: 50.7°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure in December
Harris Hills, TN

Average pressure in December - Harris Hills, TN
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in December
Harris Hills, TN

Average wind speed in December - Harris Hills, TN
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).

Average humidity in December
Harris Hills, TN

Average humidity in December - Harris Hills, TN
  • Average humidity in December: 80%

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

Average rainfall in December
Harris Hills, TN

Average rainfall in December - Harris Hills, TN
  • Average rainfall in December: 4.21"

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is September (2.48").

Average rainfall days in December
Harris Hills, TN

Average rainfall days in December - Harris Hills, TN
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in December
Harris Hills, TN

Average snowfall in December - Harris Hills, TN
  • Average snowfall in December: 0.31"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Harris Hills, TN

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

The month with the highest number of snowfall days is January (2.9 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
Harris Hills, TN

Average daylight in December / Average sunshine in December - Harris Hills, TN
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in December
Harris Hills, TN

Average sunshine days in December - Harris Hills, TN
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9 days).

Average UV index in December
Harris Hills, TN

Average UV index in December - Harris Hills, 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 and December (UV index 2).

Average cloud cover in December
Harris Hills, TN

Average cloud cover in December - Harris Hills, TN
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in December
Harris Hills, TN

Average visibility in December - Harris Hills, TN
  • Average visibility in December: 5mi

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

Harris Hills, Tennessee, USA

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