December weather forecast
Harbor Hills, TN

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Weather in December

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

Temperature

Harbor Hills's December weather features a light decline in high-temperatures, reducing from a refreshing 57.6°F (14.2°C) in November to a fresh 50°F (10°C). During December, the temperature tends to dip to an average of 35.8°F (2.1°C) at night.

Humidity

The most humid month in Harbor Hills is December, with an average relative humidity of 80%.

Rainfall

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

Snowfall

January through April, November and December are months with snowfall. In Harbor Hills, during December, snow falls for 2.2 days and regularly aggregates up to 0.55" (14mm) of snow. Throughout the year, in Harbor Hills, Tennessee, 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.
On the first day of December, 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 in Harbor Hills is December, with an average of 5h of sunshine.

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 health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in December transforms into this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

Harbor Hills in December has an average high-temperature of 50°F (10°C) and an average low-temperature of 35.8°F (2.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 86°F (30°C).

What is the most humid month?

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

What is the average humidity in December?

In December, the average relative humidity is 80%.

What is the rainiest month?

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

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

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

How much does it snow in December?

In Harbor Hills, in December, during 2.2 snowfall days, 0.55" (14mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 48min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

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?

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

How long on average sun shines in December?

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

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.

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Harbor Hills, Tennessee, USA

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