December weather forecast
Harbor Hills, TN

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Weather in December

The first month of the winter, December, is also a fresh month in Harbor Hills, Tennessee, with temperature in the range of an average high of 50°F (10°C) and an average low of 35.8°F (2.1°C).

Temperature

Harbor Hills in December undergoes a slight reduction in the average high-temperature, shifting from November's moderate 57.6°F (14.2°C) to a fresh 50°F (10°C). An average low-temperature of 35.8°F (2.1°C) is common in Harbor Hills, Tennessee, during the nights of December.

Humidity

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

Rainfall

The wettest months are July and December, with an average 4.29" (109mm) of rainfall.

Snowfall

January through April, November and December are months with snowfall. In December, in Harbor Hills, it is snowing for 2.2 days. Throughout December, 0.55" (14mm) of snow is accumulated. Throughout the year, in Harbor Hills, there are 14.8 snowfall days, and 3.07" (78mm) of snow is accumulated.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year in Harbor Hills.
On the first day of December in Harbor Hills, sunrise is at 7:30 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:37 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 5h of sunshine.

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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are the temperatures in Harbor Hills in December?

An average high-temperature, in December, in Harbor Hills, is 50°F (10°C) and the average low-temperature is 35.8°F (2.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 86°F (30°C).

What is the most humid month in Harbor Hills?

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

What is the average humidity in December in Harbor Hills?

In December, the average relative humidity is 80%.

What is the rainiest month in Harbor Hills?

The months with the most rainfall in Harbor Hills are July and December, with an average 4.29" (109mm) of precipitation.

How much does it rain in Harbor Hills in December?

In December, in Harbor Hills, the rain falls for 13.6 days. Throughout December, 4.29" (109mm) of precipitation is accumulated.

How many days does it snow in December in Harbor Hills?

In Harbor Hills, Tennessee, during December, snow falls for 2.2 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days in Harbor Hills?

December has the shortest days of the year in Harbor Hills, with an average of 9h and 48min of daylight.

How many hours of daylight does Harbor Hills have in December?

In Harbor Hills, Tennessee, the average day length in December is 9h and 49min.

When are sunrise and sunset in December in Harbor Hills?

In December, on the first day of the month, sunrise is at 7:30 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:37 pm EST.

What is the month with the least sunshine in Harbor Hills?

The month with the least sunshine is December, with an average of 5h of sunshine.

How many hours of sunshine does Harbor Hills have in December?

In December, the average sunshine duration in Harbor Hills, Tennessee, is 5h.

What is the month with the lowest UV index in Harbor Hills?

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

What is the UV index intensity in December in Harbor Hills?

The average daily maximum UV index in December in Harbor Hills, Tennessee, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Harbor Hills, TN

Average temperature in December - Harbor Hills, TN
  • Average high temperature in December: 50°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45.5°F).

  • Average low temperature in December: 35.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in December
Harbor Hills, TN

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

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

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Average wind speed in December
Harbor Hills, TN

Average wind speed in December - Harbor Hills, TN
  • Average wind speed in December: 5.8mph

The windiest months (with the highest average wind speed) are February, March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).

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Average humidity in December
Harbor Hills, TN

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

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).

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Average rainfall in December
Harbor Hills, TN

Average rainfall in December - Harbor Hills, TN
  • Average rainfall in December: 4.29"

The wettest months (with the highest rainfall) are July and December (4.29").
The driest month (with the least rainfall) is September (2.32").

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Average rainfall days in December
Harbor Hills, TN

Average rainfall days in December - Harbor Hills, TN
  • Average rainfall days in December: 13.6 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.5 days).

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Average snowfall in December
Harbor Hills, TN

Average snowfall in December - Harbor Hills, TN
  • Average snowfall in December: 0.55"

The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Harbor Hills, TN

Average snowfall days in December - Harbor Hills, TN
  • Average snowfall days in December: 2.2 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
Harbor Hills, TN

Average daylight in December / Average sunshine in December - Harbor 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 48min).

  • Average sunshine in December: 5h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Harbor Hills, TN

Average sunshine days in December - Harbor Hills, TN
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (10.2 days).

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Average UV index in December
Harbor Hills, TN

Average UV index in December - Harbor 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, February and December (UV index 2).

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Average cloud cover in December
Harbor Hills, TN

Average cloud cover in December - Harbor Hills, TN
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Harbor Hills, TN

Average visibility in December - Harbor Hills, TN
  • Average visibility in December: 6mi

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

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Harbor Hills, Tennessee, USA

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